File name: Pandora251s1_Nainital-ARIES_20240730_L2Fit_fout2c2d20221223p1-8.txt File generation date: 20240730T185610.8Z Data description: Level 2 spectral fitting results file Data file version: fout2c2p1-8 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_v2d20221223.txt Level 1 file used: Pandora251s1_Nainital-ARIES_20240730_L1_smca1c2d20221223p1-8.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: 20240730 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: OoB session based on session 1 First and last pixel inside fitting window: 196 338 Nominal wavelengths inside fitting window [nm]: 305.0600 305.2012 305.3423 305.4835 305.6246 305.7657 305.9068 306.0479 306.1890 306.3301 306.4711 306.6122 306.7532 306.8943 307.0353 307.1763 307.3173 307.4583 307.5992 307.7402 307.8811 308.0221 308.1630 308.3039 308.4448 308.5857 308.7266 308.8675 309.0083 309.1492 309.2900 309.4309 309.5717 309.7125 309.8533 309.9941 310.1348 310.2756 310.4163 310.5571 310.6978 310.8385 310.9792 311.1199 311.2606 311.4013 311.5419 311.6826 311.8232 311.9638 312.1044 312.2450 312.3856 312.5262 312.6668 312.8073 312.9479 313.0884 313.2289 313.3694 313.5099 313.6504 313.7909 313.9314 314.0718 314.2123 314.3527 314.4931 314.6335 314.7739 314.9143 315.0547 315.1951 315.3354 315.4757 315.6161 315.7564 315.8967 316.0370 316.1773 316.3175 316.4578 316.5980 316.7383 316.8785 317.0187 317.1589 317.2991 317.4393 317.5795 317.7196 317.8598 317.9999 318.1400 318.2801 318.4202 318.5603 318.7004 318.8404 318.9805 319.1205 319.2606 319.4006 319.5406 319.6806 319.8206 319.9605 320.1005 320.2404 320.3804 320.5203 320.6602 320.8001 320.9400 321.0799 321.2198 321.3596 321.4995 321.6393 321.7791 321.9189 322.0587 322.1985 322.3383 322.4780 322.6178 322.7575 322.8972 323.0370 323.1767 323.3164 323.4560 323.5957 323.7354 323.8750 324.0146 324.1543 324.2939 324.4335 324.5730 324.7126 324.8522 324.9917 --------------------------------------------------------------------------------------- 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 20240730T053343.3Z 8977.231751 28 1 11.64 2 20.30 118.56 44.54 276.85 0.00 1 0.00 1 0 17 7.456e-03 6.368e-03 4.523e-04 3.749e-04 1.319473e-01 1.951698e-04 1.475822e-03 -6.000000e+00 4.278094e-03 228.43 -2.00 3.21 -2.00 313.76 0.00e+00 2.980143e-04 1.359722e-05 1.087520e-05 -6.000000e+00 1.901300e-04 283.97 -2.00 20.00 -2.00 313.27 0.00e+00 1.066 0.000 302.00 328.00 3 2.2206e+00 4.9579e-04 1.0521e-02 -6.0000e+00 1.0638e-02 2.0101e-02 5.4844e-04 6.1921e-03 -6.0000e+00 1.1556e-02 2.4623e-03 3.1576e-04 3.0323e-03 -6.0000e+00 6.8882e-03 -3.8069e-03 1.3407e-04 8.6170e-04 -6.0000e+00 2.8991e-03 2.2486e-02 1.7541e-04 1.0578e-05 1.2331e-05 -6.0000e+00 2.0496e-04 -1.4039e-02 1.0671e-04 12 1 1 12 1 1 99.98 25.43 0.19 -0.01404 -0.01272 243 157 1 5 0 47.680 34.00 20.01 25.43 37.04 9.1 1014.66 35 -532 -333 -2048 -1733 -594 446 975 784 -366 -1341 -539 -45 -68 712 -112 -59 491 611 831 442 427 1416 908 614 634 12 -137 -69 1275 1290 1422 1548 -905 -2156 -1414 -1800 -718 -418 -639 -1230 -892 -841 -936 -440 -532 -580 -456 -622 293 647 564 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187 -195 -141 -563 -970 -922 SS 20240730T085053.8Z 8977.368678 155 1 1.53 2 29.93 255.32 84.23 295.66 0.00 1 0.00 1 0 17 1.104e-02 8.876e-03 5.879e-03 4.735e-03 1.409322e-01 2.454112e-03 1.570954e-03 -6.000000e+00 6.334124e-03 228.43 -2.00 3.21 -2.00 313.98 0.00e+00 5.419666e-04 1.781406e-04 1.185501e-05 -6.000000e+00 2.815254e-04 283.97 -2.00 20.00 -2.00 313.48 0.00e+00 1.153 0.000 302.00 328.00 3 4.4717e+00 6.2439e-03 1.1331e-02 -6.0000e+00 1.5751e-02 2.0797e-02 6.9176e-03 6.6397e-03 -6.0000e+00 1.7110e-02 6.9389e-03 3.9750e-03 3.2295e-03 -6.0000e+00 1.0199e-02 -6.4815e-03 1.6950e-03 9.4918e-04 -6.0000e+00 4.2924e-03 2.1591e-03 9.8458e-05 1.3378e-04 1.2752e-05 -6.0000e+00 3.0348e-04 -1.4363e-02 8.0628e-05 12 9 1 12 1 1 999.00 26.79 -0.01 -0.01436 -0.01362 1 10 1 5 0 762.850 35.00 20.00 26.79 27.57 8.9 963.51 1862 -1818 -359 -2988 -3439 -276 2345 -50 2251 -244 -1592 -2092 1095 226 1119 626 -947 222 -315 1326 1851 1640 1641 5 692 847 -316 -1625 -586 1102 -595 2077 924 -814 -3080 -649 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