File name: Pandora251s1_Nainital-ARIES_20240721_L2Fit_fout2c3d20240101p1-8.txt File generation date: 20240824T110418.5Z Data description: Level 2 spectral fitting results file Data file version: fout2c3p1-8 Local principal investigator: Manish Naja Network principal investigator: Alexander Cede Instrument type: Pandora Instrument number: 251 Spectrometer number: 1 Processing software version used: BlickP v1.8.59 Instrument operation file used: Pandora251_OF_v2d20221122.txt Instrument calibration file used: Pandora251s1_CF_v3d20240101.txt Level 1 file used: Pandora251s1_Nainital-ARIES_20240721_L1_smca1c3d20240101p1-8.txt Full location name: Aryabhatta Research Institute of Observational Sciences (ARIES) Short location name: Nainital-ARIES Country of location: India Location latitude [deg]: 29.3588 Location longitude [deg]: 79.4583 Location altitude [m]: 1978 Local noon date: 20240721 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: Based on session 2 OoB for fieldcal First and last pixel inside fitting window: 196 338 Nominal wavelengths inside fitting window [nm]: 305.0452 305.1864 305.3276 305.4687 305.6098 305.7510 305.8921 306.0332 306.1743 306.3153 306.4564 306.5975 306.7385 306.8795 307.0206 307.1616 307.3026 307.4436 307.5846 307.7255 307.8665 308.0074 308.1484 308.2893 308.4302 308.5711 308.7120 308.8529 308.9937 309.1346 309.2754 309.4162 309.5571 309.6979 309.8387 309.9795 310.1202 310.2610 310.4018 310.5425 310.6832 310.8239 310.9647 311.1053 311.2460 311.3867 311.5274 311.6680 311.8087 311.9493 312.0899 312.2305 312.3711 312.5117 312.6523 312.7928 312.9334 313.0739 313.2144 313.3549 313.4954 313.6359 313.7764 313.9169 314.0573 314.1978 314.3382 314.4787 314.6191 314.7595 314.8999 315.0402 315.1806 315.3210 315.4613 315.6016 315.7419 315.8823 316.0226 316.1628 316.3031 316.4434 316.5836 316.7239 316.8641 317.0043 317.1445 317.2847 317.4249 317.5651 317.7052 317.8454 317.9855 318.1256 318.2658 318.4059 318.5460 318.6860 318.8261 318.9662 319.1062 319.2462 319.3863 319.5263 319.6663 319.8063 319.9462 320.0862 320.2262 320.3661 320.5060 320.6459 320.7858 320.9257 321.0656 321.2055 321.3454 321.4852 321.6250 321.7649 321.9047 322.0445 322.1843 322.3241 322.4638 322.6036 322.7433 322.8831 323.0228 323.1625 323.3022 323.4419 323.5815 323.7212 323.8609 324.0005 324.1401 324.2797 324.4194 324.5589 324.6985 324.8381 324.9777 --------------------------------------------------------------------------------------- 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: Ozone slant column amount [moles per square meter], -9e99=fitting not successful Column 23: 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 24: 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 25: 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 26: 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 27: Ozone effective temperature [K] Column 28: 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 29: 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 30: 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 31: Effective ozone fitting wavelength [nm], -9=fitting not successful Column 32: 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 33: Sulfur dioxide slant column amount [moles per square meter], -9e99=fitting not successful Column 34: Independent uncertainty of sulfur 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 sulfur 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 sulfur 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 sulfur 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: Sulfur dioxide effective temperature [K] Column 39: Independent uncertainty of sulfur 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 sulfur 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 sulfur 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 sulfur dioxide fitting wavelength [nm], -9=fitting not successful Column 43: Diffuse correction applied before fitting at effective fitting wavelength for sulfur dioxide [%], 0=no diffuse correction applied or fitting not requested, >0=measured diffuse correction, <0=(negative value of) calculated diffuse correction Column 44: Molecular scattering air mass factor used for molecular scattering subtraction before the fitting Column 45: Estimated uncertainty of molecular scattering air mass factor, -9=molecular scattering was not subtracted before the fitting Column 46: Lower limit used for wavelength scaling [nm] Column 47: Upper limit used for wavelength scaling [nm] Column 48: Order of smoothing polynomial Column 49: Smoothing polynomial coefficient, order 0 Column 50: Independent uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful Column 51: Structured uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful Column 52: Common uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful Column 53: rms-based uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful Column 54: Smoothing polynomial coefficient, order 1 Column 55: Independent uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful Column 56: Structured uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful Column 57: Common uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful Column 58: rms-based uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful Column 59: Smoothing polynomial coefficient, order 2 Column 60: Independent uncertainty of smoothing polynomial coefficient, order 2, -9=fitting not successful Column 61: Structured uncertainty of smoothing polynomial coefficient, order 2, -9=fitting not successful Column 62: Common uncertainty of smoothing polynomial coefficient, order 2, -9=fitting not successful Column 63: rms-based uncertainty of smoothing polynomial coefficient, order 2, -9=fitting not successful Column 64: Smoothing polynomial coefficient, order 3 Column 65: Independent uncertainty of smoothing polynomial coefficient, order 3, -9=fitting not successful Column 66: Structured uncertainty of smoothing polynomial coefficient, order 3, -9=fitting not successful Column 67: Common uncertainty of smoothing polynomial coefficient, order 3, -9=fitting not successful Column 68: rms-based uncertainty of smoothing polynomial coefficient, order 3, -9=fitting not successful Column 69: Mean value of measured data inside fitting window [same units as measurements] Column 70: Wavelength change polynomial coefficient, order 0 Column 71: Independent uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful Column 72: Structured uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful Column 73: Common uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful Column 74: rms-based uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful Column 75: L1 based wavelength change coefficient, order 0, -9=no L1 wavelength change determination Column 76: L1 based wavelength change coefficient, order 1, -9=no L1 wavelength change determination Column 77: 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 78: 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 79: 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 80: 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 81: 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 82: 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 83: Atmospheric variability [%], 999=no atmospheric variability was determined Column 84: Wavelength effective temperature [°C], 999=no effective temperature given Column 85: Estimated average residual stray light level [%] (only valid for stray light correction methods 2 and higher) Column 86: Retrieved wavelength shift from L1 data [nm], -9=no wavelength change determination Column 87: Retrieved total wavelength shift [nm], -9=no wavelength change fitting Column 88: Number of bright count cycles Column 89: Number of dark count cycles Column 90: Effective position of filterwheel #1, 0=filterwheel not used, 1-9 are valid positions Column 91: Effective position of filterwheel #2, 0=filterwheel not used, 1-9 are valid positions Column 92: Sum over 2^i, 0=spectra were interpolated in time, 1=spectra are corrected for off-target signal Column 93: Integration time [ms] Column 94: Temperature at electronics board [°C], 999=no temperature signal Column 95: Spectrometer control temperature [°C], 999=no temperature signal Column 96: Auxiliary spectrometer temperature [°C], 999=no temperature signal Column 97: Temperature in head sensor [°C], 999=no temperature signal Column 98: Humidity in head sensor [%], -9=no humidity signal Column 99: Pressure in head sensor [hPa], -9=no pressure signal Columns 100-242: Unweighted slant column residuals for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting Columns 243-385: 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 --------------------------------------------------------------------------------------- SS 20240721T114058.2Z 8968.486785 295 1 1.59 2 65.91 280.65 118.26 104.47 0.00 1 0.00 1 0 17 9.112e-03 6.233e-03 3.308e-03 1.521e-03 2.858784e-01 7.729084e-04 3.117665e-03 -6.000000e+00 5.229826e-03 228.58 -2.00 3.21 -2.00 316.40 0.00e+00 5.055640e-04 8.999622e-05 5.354585e-05 -6.000000e+00 2.323222e-04 283.93 -2.00 20.00 -2.00 315.67 0.00e+00 2.434 0.000 302.00 328.00 3 1.3187e+00 2.0145e-03 2.3551e-02 -6.0000e+00 1.3010e-02 7.3363e-03 2.2573e-03 1.3363e-02 -6.0000e+00 1.4132e-02 1.6450e-03 1.3056e-03 6.5260e-03 -6.0000e+00 8.4220e-03 -2.3408e-03 6.0880e-04 1.8384e-03 -6.0000e+00 3.5428e-03 1.4269e-02 -5.3173e-05 4.3451e-05 2.1793e-05 -6.0000e+00 2.5051e-04 -1.1068e-03 0.0000e+00 12 1 1 12 1 1 81.54 27.81 0.22 -0.00111 -0.00151 20 99 1 5 0 75.750 35.75 20.00 27.81 28.26 8.9 970.26 -915 -1049 -1272 -3120 -2760 -1896 -1088 673 -622 -1519 -2186 -1977 66 -576 1562 680 -314 -162 907 856 168 136 1557 482 388 582 107 -403 -507 537 1124 1840 1110 -1094 -2876 -1628 -1641 -1096 -641 -517 -730 -772 -563 -394 -30 -37 -541 -226 -479 93 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263 6 -411 385 401 -229 -97 -302 -1156 -1064 SS 20240721T125800.0Z 8968.540278 331 1 53.21 2 82.14 288.92 102.95 111.61 0.00 1 0.00 1 0 17 3.706e-01 2.121e-02 1.555e-01 5.502e-03 7.014677e-01 2.900562e-03 7.661887e-03 -6.000000e+00 2.126905e-01 228.58 -2.00 3.21 -2.00 321.00 0.00e+00 7.643825e-03 1.257152e-03 3.335992e-03 -6.000000e+00 9.449364e-03 283.93 -2.00 20.00 -2.00 320.39 0.00e+00 6.835 0.003 302.00 328.00 3 2.8368e+00 9.3943e-03 6.4494e-02 -6.0000e+00 5.2908e-01 5.2435e-01 1.1789e-02 3.5200e-02 -6.0000e+00 5.7474e-01 -6.6750e-01 9.8856e-03 2.0079e-02 -6.0000e+00 3.4252e-01 2.7820e-01 4.8653e-03 8.3841e-03 -6.0000e+00 1.4407e-01 6.0262e-05 -6.9131e-04 1.4675e-04 1.3387e-04 -6.0000e+00 1.0190e-02 -2.9599e-04 0.0000e+00 12 8 8 10 0 0 56.01 27.86 0.18 -0.00030 -0.00549 26 4 1 5 0 2046.290 35.75 19.99 27.86 29.91 8.7 975.15 50856 -124163 -92417 -145002 -134234 -52598 -37211 -99398 157196 -116646 -93054 -119437 14234 -91757 -37714 -65205 42020 -43900 -28695 25961 -33282 -15196 18041 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