File name: Pandora25s1_HoustonTX_20230121_L2Fit_fwvt1c9d20230101p1-8.txt
File generation date: 20241218T004824.6Z
Data description: Level 2 spectral fitting results file
Data file version: fwvt1c9p1-8
Local principal investigator: Jimmy Flynn
Network principal investigator: Alexander Cede
Instrument type: Pandora
Instrument number: 25
Spectrometer number: 1
Processing software version used: BlickP v1.8.60
Instrument operation file used: Pandora25_OF_v7d20190903.txt
Instrument calibration file used: Pandora25s1_CF_v9d20230101.txt
Level 1 file used: Pandora25s1_HoustonTX_20230121_L1_smca1c9d20230101p1-8.txt
Full location name: University Of Houston
Short location name: HoustonTX
Country of location: United States
Location latitude [deg]: 29.7200
Location longitude [deg]: -95.3400
Location altitude [m]: 19
Local noon date: 20230121
Notes on s-number (L1 configuration): Corrections NOT applied although requested by the s-number are latency correction, matrix method stray light correction (replaced by simple method)
Data caveats: Modification of session 8, but repeated E-MLE of HCHO.
First and last pixel inside fitting window: 1709 1859
Nominal wavelengths inside fitting window [nm]: 492.0722 492.1924 492.3125 492.4327 492.5528 492.6729 492.7930 492.9131 493.0332 493.1532 493.2732 493.3932 493.5132 493.6332 493.7532 493.8731 493.9931 494.1130 494.2329 494.3528 494.4726 494.5925 494.7123 494.8321 494.9519 495.0717 495.1915 495.3112 495.4309 495.5507 495.6704 495.7900 495.9097 496.0293 496.1490 496.2686 496.3882 496.5078 496.6273 496.7469 496.8664 496.9859 497.1054 497.2249 497.3444 497.4638 497.5832 497.7026 497.8220 497.9414 498.0608 498.1801 498.2995 498.4188 498.5381 498.6573 498.7766 498.8958 499.0151 499.1343 499.2535 499.3727 499.4918 499.6110 499.7301 499.8492 499.9683 500.0874 500.2064 500.3255 500.4445 500.5635 500.6825 500.8015 500.9204 501.0394 501.1583 501.2772 501.3961 501.5150 501.6338 501.7527 501.8715 501.9903 502.1091 502.2279 502.3466 502.4654 502.5841 502.7028 502.8215 502.9402 503.0588 503.1775 503.2961 503.4147 503.5333 503.6518 503.7704 503.8889 504.0075 504.1260 504.2444 504.3629 504.4814 504.5998 504.7182 504.8366 504.9550 505.0734 505.1917 505.3101 505.4284 505.5467 505.6650 505.7832 505.9015 506.0197 506.1379 506.2561 506.3743 506.4925 506.6106 506.7288 506.8469 506.9650 507.0830 507.2011 507.3192 507.4372 507.5552 507.6732 507.7912 507.9091 508.0271 508.1450 508.2629 508.3808 508.4987 508.6165 508.7344 508.8522 508.9700 509.0878 509.2056 509.3233 509.4411 509.5588 509.6765 509.7942 509.9119
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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 101-251: Unweighted slant column residuals for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting
Columns 252-402: 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
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SQ 20230121T145625.5Z 8421.622517 80 1 2.74 2 71.88 126.76 74.96 132.70 0.00 1 0.00 1 0 22 2.428e-03 2.425e-03 1.439e-03 1.437e-03 5.506890e+03 9.195405e+01 3.811391e+02 -6.000000e+00 1.349768e+02 284.93 -2.00 20.00 -2.00 505.26 0.00e+00 1.197929e-03 3.959838e-05 7.155683e-05 -6.000000e+00 6.812538e-05 284.93 -2.00 20.00 -2.00 500.44 0.00e+00 1.569409e-01 2.822463e-02 3.816158e-02 -6.000000e+00 4.766515e-02 224.50 -2.00 3.24 -2.00 502.03 0.00e+00 3.173 0.000 489.00 513.00 1 5.3452e+00 2.1651e-03 5.8294e-03 -6.0000e+00 3.6577e-03 7.4234e-04 5.5702e-04 9.3013e-04 -6.0000e+00 9.5077e-04 5.7292e-03 2.6379e-04 1.3887e-04 5.0680e-05 -6.0000e+00 2.4471e-04 1.6765e-02 -5.9834e-05 12 1 1 12 1 1 99.54 22.11 1.72 0.01677 0.01859 4 21 1 4 0 512.560 24.96 20.01 22.11 18.72 27.2 1100.00 -247 33 -71 -131 75 274 546 335 242 45 -91 317 -282 -470 -95 -449 -261 53 242 65 45 187 -4 386 550 108 361 206 -225 -247 -284 -24 -31 33 -41 -114 68 -27 178 -222 -317 91 7 152 195 95 139 -82 217 -112 -34 -526 -689 -646 -161 -259 286 -53 -70 82 369 379 163 156 254 317 116 37 -141 -170 -430 150 -450 -83 -26 -205 -108 -166 -106 -180 -206 -156 -397 -331 -106 -164 -83 -6 -259 144 -158 51 129 387 212 285 -56 -137 121 -363 -396 -364 -289 -59 -16 -327 -349 -331 -18 -17 313 7 152 370 49 291 228 596 225 143 319 59 -45 343 110 11 135 207 -20 320 124 -84 -260 -96 -208 -29 83 129 -135 75 125 73 -71 218 27 71 190 -9 -98 -312 -389 -243 32 -71 -133 77 283 573 354 255 47 -93 325 -286 -479 -96 -452 -267 55 250 69 47 197 -5 407 573 113 375 214 -232 -251 -284 -24 -31 34 -43 -119 71 -27 183 -228 -326 93 7 158 202 98 144 -85 223 -113 -33 -519 -673 -635 -159 -260 289 -54 -72 84 377 389 166 159 260 321 117 37 -139 -168 -422 146 -446 -82 -26 -204 -105 -162 -102 -173 -198 -151 -388 -322 -104 -162 -81 -6 -254 140 -156 51 128 386 210 280 -55 -133 116 -340 -368 -341 -274 -57 -16 -326 -347 -326 -18 -17 305 7 151 369 49 290 229 600 227 144 317 58 -44 336 108 10 132 202 -19 311 120 -82 -250 -92 -198 -27 80 125 -133 74 124 73 -71 217 27 71 187 -9 -96 -299 -373