File name: Pandora208s1_Windsor-West_20241231_L2Fit_fwvt1c4d20220407p1-8.txt File generation date: 20250101T054202.0Z Data description: Level 2 spectral fitting results file Data file version: fwvt1c4p1-8 Local principal investigator: Vitali Fioletov Network principal investigator: Alexander Cede Instrument type: Pandora Instrument number: 208 Spectrometer number: 1 Processing software version used: BlickP v1.8.60 Instrument operation file used: Pandora208_OF_v4d20211014.txt Instrument calibration file used: Pandora208s1_CF_v4d20220407.txt Level 1 file used: Pandora208s1_Windsor-West_20241231_L1_smca1c4d20220407p1-8.txt Full location name: Ontario Ministry of the Environment, Windsor West Short location name: Windsor-West Country of location: Canada Location latitude [deg]: 42.2929 Location longitude [deg]: -83.0731 Location altitude [m]: 180 Local noon date: 20241231 Notes on s-number (L1 configuration): Corrections NOT applied although requested by the s-number are dark map for dark correction (replaced by immediate dark method), latency correction, matrix method stray light correction (replaced by simple method) Data caveats: None First and last pixel inside fitting window: 1623 1772 Nominal wavelengths inside fitting window [nm]: 492.0606 492.1820 492.3034 492.4247 492.5461 492.6674 492.7888 492.9101 493.0314 493.1527 493.2739 493.3952 493.5164 493.6376 493.7588 493.8800 494.0011 494.1223 494.2434 494.3645 494.4856 494.6067 494.7277 494.8488 494.9698 495.0908 495.2118 495.3328 495.4537 495.5747 495.6956 495.8165 495.9374 496.0583 496.1791 496.3000 496.4208 496.5416 496.6624 496.7832 496.9039 497.0247 497.1454 497.2661 497.3868 497.5075 497.6282 497.7488 497.8694 497.9900 498.1106 498.2312 498.3518 498.4723 498.5928 498.7133 498.8338 498.9543 499.0748 499.1952 499.3156 499.4360 499.5564 499.6768 499.7972 499.9175 500.0378 500.1581 500.2784 500.3987 500.5190 500.6392 500.7594 500.8796 500.9998 501.1200 501.2402 501.3603 501.4804 501.6005 501.7206 501.8407 501.9607 502.0808 502.2008 502.3208 502.4408 502.5608 502.6807 502.8007 502.9206 503.0405 503.1604 503.2802 503.4001 503.5199 503.6398 503.7596 503.8793 503.9991 504.1189 504.2386 504.3583 504.4780 504.5977 504.7174 504.8370 504.9567 505.0763 505.1959 505.3155 505.4350 505.5546 505.6741 505.7936 505.9131 506.0326 506.1521 506.2715 506.3909 506.5104 506.6297 506.7491 506.8685 506.9878 507.1072 507.2265 507.3458 507.4650 507.5843 507.7035 507.8228 507.9420 508.0612 508.1804 508.2995 508.4187 508.5378 508.6569 508.7760 508.8950 509.0141 509.1331 509.2522 509.3712 509.4902 509.6091 509.7281 509.8470 509.9659 --------------------------------------------------------------------------------------- Column 1: Two letter code of measurement routine Column 2: UT date and time for center-time of measurement, yyyymmddThhmmssZ (ISO 8601) Column 3: Fractional days since 1-Jan-2000 midnight for center-time of measurement Column 4: Routine count (1 for the first routine of the day, 2 for the second, etc.) Column 5: Repetition count (1 for the first set in the routine, 2 for the second, etc.) Column 6: Total duration of measurement set in seconds Column 7: Data processing type index Column 8: Solar zenith angle for center-time of measurement in degree Column 9: Solar azimuth for center-time of measurement in degree, 0=north, increases clockwise Column 10: Lunar zenith angle for center-time of measurement in degree Column 11: Lunar azimuth for center-time of measurement in degree, 0=north, increases clockwise Column 12: Pointing zenith angle in degree, absolute or relative (see next column), 999=tracker not used Column 13: Zenith pointing mode: zenith angle is... 0=absolute, 1=relative to sun, 2=relative to moon Column 14: Pointing azimuth in degree, increases clockwise, absolute (0=north) or relative (see next column), 999=tracker not used Column 15: Azimuth pointing mode: like zenith angle mode but also fixed scattering angles relative to sun (3) or moon (4) Column 16: Fitting result index: 0=no error or warning, 1, 2=warning, >2=error Column 17: Number of function evaluations used, 0=linear fitting or fitting not successful or no fitting done Column 18: rms of unweighted fitting residuals, -9=fitting not successful Column 19: Normalized rms of fitting residuals weighted with independent uncertainty, -9=fitting not successful or no uncertainty used Column 20: Expected rms based on independent uncertainty, -9=fitting not successful or no uncertainty given Column 21: Expected normalized weighted rms based on independent uncertainty, -9=fitting not successful or no uncertainty given Column 22: Water vapor slant column amount [moles per square meter], -9e99=fitting not successful Column 23: Independent uncertainty of water vapor slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -5=no independent uncertainty input was given, -9=spectral fitting not successful Column 24: Structured uncertainty of water vapor slant column amount [moles per square meter], -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful Column 25: Common uncertainty of water vapor slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -6=no common uncertainty input was given, -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful Column 26: rms-based uncertainty of water vapor slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no rms-based uncertainty could be retrieved, -9=spectral fitting not successful Column 27: Water vapor effective temperature [K] Column 28: Independent uncertainty of water vapor effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -5=no independent uncertainty input was given, -9=spectral fitting not successful Column 29: Structured uncertainty of water vapor effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -9=spectral fitting not successful Column 30: Common uncertainty of water vapor effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no common uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -6=no common uncertainty input was given, -9=spectral fitting not successful Column 31: Effective water vapor fitting wavelength [nm], -9=fitting not successful Column 32: Diffuse correction applied before fitting at effective fitting wavelength for water vapor [%], 0=no diffuse correction applied or fitting not requested, >0=measured diffuse correction, <0=(negative value of) calculated diffuse correction Column 33: Nitrogen dioxide slant column amount [moles per square meter], -9e99=fitting not successful Column 34: Independent uncertainty of nitrogen dioxide slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -5=no independent uncertainty input was given, -9=spectral fitting not successful Column 35: Structured uncertainty of nitrogen dioxide slant column amount [moles per square meter], -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful Column 36: Common uncertainty of nitrogen dioxide slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -6=no common uncertainty input was given, -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful Column 37: rms-based uncertainty of nitrogen dioxide slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no rms-based uncertainty could be retrieved, -9=spectral fitting not successful Column 38: Nitrogen dioxide effective temperature [K] Column 39: Independent uncertainty of nitrogen dioxide effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -5=no independent uncertainty input was given, -9=spectral fitting not successful Column 40: Structured uncertainty of nitrogen dioxide effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -9=spectral fitting not successful Column 41: Common uncertainty of nitrogen dioxide effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no common uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -6=no common uncertainty input was given, -9=spectral fitting not successful Column 42: Effective nitrogen dioxide fitting wavelength [nm], -9=fitting not successful Column 43: Diffuse correction applied before fitting at effective fitting wavelength for nitrogen dioxide [%], 0=no diffuse correction applied or fitting not requested, >0=measured diffuse correction, <0=(negative value of) calculated diffuse correction Column 44: Ozone slant column amount [moles per square meter], -9e99=fitting not successful Column 45: Independent uncertainty of ozone slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -5=no independent uncertainty input was given, -9=spectral fitting not successful Column 46: Structured uncertainty of ozone slant column amount [moles per square meter], -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful Column 47: Common uncertainty of ozone slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -6=no common uncertainty input was given, -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful Column 48: rms-based uncertainty of ozone slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no rms-based uncertainty could be retrieved, -9=spectral fitting not successful Column 49: Ozone effective temperature [K] Column 50: Independent uncertainty of ozone effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -5=no independent uncertainty input was given, -9=spectral fitting not successful Column 51: Structured uncertainty of ozone effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -9=spectral fitting not successful Column 52: Common uncertainty of ozone effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no common uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -6=no common uncertainty input was given, -9=spectral fitting not successful Column 53: Effective ozone fitting wavelength [nm], -9=fitting not successful Column 54: Diffuse correction applied before fitting at effective fitting wavelength for ozone [%], 0=no diffuse correction applied or fitting not requested, >0=measured diffuse correction, <0=(negative value of) calculated diffuse correction Column 55: Molecular scattering air mass factor used for molecular scattering subtraction before the fitting Column 56: Estimated uncertainty of molecular scattering air mass factor, -9=molecular scattering was not subtracted before the fitting Column 57: Lower limit used for wavelength scaling [nm] Column 58: Upper limit used for wavelength scaling [nm] Column 59: Order of smoothing polynomial Column 60: Smoothing polynomial coefficient, order 0 Column 61: Independent uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful Column 62: Structured uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful Column 63: Common uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful Column 64: rms-based uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful Column 65: Smoothing polynomial coefficient, order 1 Column 66: Independent uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful Column 67: Structured uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful Column 68: Common uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful Column 69: rms-based uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful Column 70: Mean value of measured data inside fitting window [same units as measurements] Column 71: Wavelength change polynomial coefficient, order 0 Column 72: Independent uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful Column 73: Structured uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful Column 74: Common uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful Column 75: rms-based uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful Column 76: L1 based wavelength change coefficient, order 0, -9=no L1 wavelength change determination Column 77: L1 based wavelength change coefficient, order 1, -9=no L1 wavelength change determination Column 78: L2Fit data quality flag: 0=assured high quality, 1=assured medium quality, 2=assured low quality, 10=not-assured high quality, 11=not-assured medium quality, 12=not-assured low quality Column 79: Sum over 2^i using those i, for which the corresponding L2Fit data quality parameter exceeds the DQ1 limit, 0=L1 data quality above 0, 1=Spectral fitting was not successful, 2=Wavelength shift too large, 3=Normalized rms of fitting residuals weighted with independent uncertainty too large Column 80: Sum over 2^i using those i, for which the corresponding L2Fit data quality parameter exceeds the DQ2 limit (same parameters as for DQ1) Column 81: L1 data quality flag: 0=assured high quality, 1=assured medium quality, 2=assured low quality, 10=not-assured high quality, 11=not-assured medium quality, 12=not-assured low quality Column 82: Sum over 2^i using those i, for which the corresponding L1 data quality parameter exceeds the DQ1 limit, 0=Saturated data, 1=Too few dark counts measurements, 2=No temperature given or effective temperature too different from the reference temperature, 3=Dark count too high, 4=Unsuccessful dark background fitting, 5=The dark count differs significantly from the dark map for too many pixels, 6=Absolute value of estimated average residual stray light level too high, 7=Although attempted, no wavelength change could be retrieved, 8=Absolute value of retrieved wavelength shift too large, 9=Retrieved wavelength shift differs too much from the shift predicted by the effective temperature Column 83: Sum over 2^i using those i, for which the corresponding L1 data quality parameter exceeds the DQ2 limit (same parameters as for DQ1) Column 84: Atmospheric variability [%], 999=no atmospheric variability was determined Column 85: Wavelength effective temperature [°C], 999=no effective temperature given Column 86: Estimated average residual stray light level [%] (only valid for stray light correction methods 2 and higher) Column 87: Retrieved wavelength shift from L1 data [nm], -9=no wavelength change determination Column 88: Retrieved total wavelength shift [nm], -9=no wavelength change fitting Column 89: Number of bright count cycles Column 90: Number of dark count cycles Column 91: Effective position of filterwheel #1, 0=filterwheel not used, 1-9 are valid positions Column 92: Effective position of filterwheel #2, 0=filterwheel not used, 1-9 are valid positions Column 93: Sum over 2^i, 0=spectra were interpolated in time, 1=spectra are corrected for off-target signal Column 94: Integration time [ms] Column 95: Temperature at electronics board [°C], 999=no temperature signal Column 96: Spectrometer control temperature [°C], 999=no temperature signal Column 97: Auxiliary spectrometer temperature [°C], 999=no temperature signal Column 98: Temperature in head sensor [°C], 999=no temperature signal Column 99: Humidity in head sensor [%], -9=no humidity signal Column 100: Pressure in head sensor [hPa], -9=no pressure signal Columns 101-250: Unweighted slant column residuals for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting Columns 251-400: Normalized slant column residuals weighted with independent instrumental uncertainty for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting, 0=no independent instrumental uncertainty was given --------------------------------------------------------------------------------------- SQ 20241231T170519.2Z 9131.712027 165 1 55.54 2 65.69 172.35 71.93 162.45 0.00 1 0.00 1 0 15 2.427e-03 2.436e-03 5.392e-04 5.373e-04 1.458590e+03 3.123704e+01 1.151544e+02 -6.000000e+00 1.333957e+02 273.95 -2.00 20.00 -2.00 505.23 0.00e+00 5.534965e-04 1.460585e-05 3.054875e-05 -6.000000e+00 6.733604e-05 273.95 -2.00 20.00 -2.00 500.31 0.00e+00 2.062833e-01 1.076890e-02 1.115532e-02 -6.000000e+00 4.859180e-02 223.05 -2.00 3.53 -2.00 501.92 0.00e+00 2.412 0.000 489.00 513.00 1 4.8928e+00 8.2462e-04 3.5793e-03 -6.0000e+00 3.7220e-03 8.3987e-03 2.1150e-04 3.2351e-04 -6.0000e+00 9.5703e-04 1.0257e-02 8.7273e-04 5.7258e-05 1.9711e-05 -6.0000e+00 2.6549e-04 -1.2204e-03 -6.9807e-05 10 0 0 10 0 0 99.89 19.55 1.49 -0.00122 0.00483 155 42 1 4 0 305.140 22.90 14.98 19.55 10.41 19.9 937.02 -490 -298 -198 -72 229 298 431 339 388 342 147 19 -272 -97 -202 -75 -127 124 196 177 194 389 267 238 295 219 59 -110 -109 -245 -334 -248 -84 124 30 20 -63 -85 -135 -68 -137 13 77 151 227 118 99 -29 -196 -421 -470 -690 -520 -509 -408 -388 -202 -20 46 202 289 469 453 440 370 311 198 35 -44 -123 -76 -254 -138 -298 -194 -209 -304 -226 -207 -222 -359 -275 -155 -157 -92 -26 -117 69 64 62 53 54 211 261 245 200 -124 -117 -197 -325 -392 -299 -361 -188 -343 -269 -241 -215 -148 -74 44 66 262 305 365 399 329 293 255 118 195 87 42 240 86 156 277 113 117 38 73 -67 -85 -163 -125 -23 -97 -40 53 198 122 322 292 64 18 8 -28 -197 -277 -307 -492 -302 -196 -73 239 319 468 371 425 371 158 20 -283 -100 -207 -77 -133 132 213 186 205 411 282 252 313 232 62 -115 -111 -254 -342 -255 -88 128 31 21 -66 -89 -139 -70 -140 13 80 158 240 125 104 -30 -201 -420 -457 -688 -515 -508 -398 -389 -206 -20 47 207 296 482 467 452 377 313 197 34 -43 -118 -72 -243 -133 -292 -190 -204 -292 -214 -195 -208 -339 -261 -148 -152 -90 -26 -115 68 63 62 53 55 216 266 248 199 -121 -111 -184 -300 -363 -282 -351 -188 -334 -261 -231 -213 -146 -74 42 65 258 304 365 401 331 294 253 115 188 83 40 230 82 150 266 108 112 36 69 -62 -78 -148 -114 -22 -92 -39 52 194 120 319 290 64 18 8 -27 -186 -258 -287 SQ 20241231T171028.8Z 9131.715611 168 1 47.11 2 65.57 173.64 71.65 163.58 0.00 1 0.00 1 0 15 2.953e-03 2.963e-03 2.006e-03 1.997e-03 1.851367e+03 1.184186e+02 1.437472e+02 -6.000000e+00 1.623563e+02 273.95 -2.00 20.00 -2.00 505.24 0.00e+00 5.560041e-04 5.436325e-05 3.159968e-05 -6.000000e+00 8.194449e-05 273.95 -2.00 20.00 -2.00 500.26 0.00e+00 2.249703e-01 4.031353e-02 1.402625e-02 -6.000000e+00 5.911632e-02 223.05 -2.00 3.53 -2.00 501.89 0.00e+00 2.402 0.000 489.00 513.00 1 7.1722e+00 3.0902e-03 3.6428e-03 -6.0000e+00 4.5285e-03 1.2142e-02 7.8938e-04 3.8532e-04 -6.0000e+00 1.1638e-03 1.0490e-03 -1.7134e-04 2.1189e-04 2.2332e-05 -6.0000e+00 3.2314e-04 -3.6518e-03 -2.3510e-05 10 0 0 10 0 0 90.25 19.53 1.46 -0.00365 -0.00484 12 3 1 4 0 3862.940 22.90 15.00 19.53 10.46 19.8 937.36 -318 -54 -42 -28 218 145 553 160 406 388 326 -401 -160 105 -138 -35 -149 -120 245 -65 53 172 107 480 767 172 159 40 40 -599 -649 -402 -170 243 256 107 -132 -150 -61 -180 -211 -337 49 80 28 569 164 231 -12 -481 -442 -621 -596 -462 -479 -128 -210 196 -41 340 -81 506 -96 293 162 169 383 350 -255 -27 227 -564 -83 -329 -237 -220 -384 -566 -282 -189 -9 -154 -169 -210 -121 255 -228 115 -6 429 132 -95 543 317 330 -222 -302 162 -197 -327 -225 -107 -506 -229 -548 -174 -451 -142 -284 -301 120 86 128 487 112 456 467 504 416 198 65 309 -173 367 -196 127 -185 103 -288 39 83 48 421 96 -101 -382 243 -190 -118 -63 297 275 210 195 123 162 -112 -219 -282 3 -318 -54 -42 -28 228 156 601 176 445 421 349 -426 -168 108 -141 -36 -155 -128 267 -71 59 182 113 510 815 184 168 42 43 -626 -668 -414 -178 250 270 114 -140 -157 -63 -185 -218 -350 51 84 29 602 173 241 -13 -482 -430 -619 -589 -441 -469 -128 -215 201 -42 349 -83 521 -99 302 165 171 380 343 -248 -26 216 -543 -80 -323 -233 -214 -370 -538 -265 -177 -8 -146 -162 -203 -117 250 -225 113 -6 423 132 -96 552 310 333 -220 -294 153 -184 -300 -207 -100 -490 -219 -534 -168 -434 -135 -269 -287 116 84 126 484 112 458 469 505 413 194 63 295 -166 351 -189 122 -178 99 -276 37 78 44 384 87 -93 -356 229 -183 -115 -62 292 272 209 194 122 159 -107 -206 -264 2