File name: Pandora289s1_DeBilt_20250917_L2Fit_fout2c2d20250401p1-8.txt
File generation date: 20250917T233921.4Z
Data description: Level 2 spectral fitting results file
Data file version: fout2c2p1-8
Local principal investigator: Ankie Piters
Network principal investigator: Alexander Cede
Instrument type: Pandora
Instrument number: 289
Spectrometer number: 1
Processing software version used: BlickP v1.8.75
Instrument operation file used: Pandora289_OF_v3d20240910.txt
Instrument calibration file used: Pandora289s1_CF_v2d20250401.txt
Level 1 file used: Pandora289s1_DeBilt_20250917_L1_smca1c2d20250401p1-8.txt
Full location name: Royal Netherlands Meteorological Institute (KNMI), De Bilt
Short location name: DeBilt
Country of location: Netherlands
Location latitude [deg]: 52.1012
Location longitude [deg]: 5.1783
Location altitude [m]: 20
Local noon date: 20250917
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 clearance session 1
First and last pixel inside fitting window: 198 341
Nominal wavelengths inside fitting window [nm]: 305.0110 305.1514 305.2918 305.4321 305.5725 305.7128 305.8531 305.9934 306.1337 306.2740 306.4143 306.5545 306.6948 306.8350 306.9752 307.1155 307.2557 307.3959 307.5360 307.6762 307.8164 307.9565 308.0967 308.2368 308.3769 308.5170 308.6571 308.7972 308.9372 309.0773 309.2173 309.3574 309.4974 309.6374 309.7774 309.9174 310.0574 310.1973 310.3373 310.4772 310.6171 310.7571 310.8970 311.0369 311.1767 311.3166 311.4565 311.5963 311.7362 311.8760 312.0158 312.1556 312.2954 312.4352 312.5749 312.7147 312.8544 312.9942 313.1339 313.2736 313.4133 313.5530 313.6927 313.8323 313.9720 314.1116 314.2513 314.3909 314.5305 314.6701 314.8097 314.9492 315.0888 315.2284 315.3679 315.5074 315.6469 315.7864 315.9259 316.0654 316.2049 316.3443 316.4838 316.6232 316.7626 316.9020 317.0414 317.1808 317.3202 317.4596 317.5989 317.7383 317.8776 318.0169 318.1562 318.2955 318.4348 318.5741 318.7133 318.8526 318.9918 319.1310 319.2702 319.4094 319.5486 319.6878 319.8270 319.9661 320.1053 320.2444 320.3835 320.5226 320.6617 320.8008 320.9399 321.0789 321.2180 321.3570 321.4960 321.6351 321.7741 321.9131 322.0520 322.1910 322.3300 322.4689 322.6078 322.7467 322.8857 323.0246 323.1634 323.3023 323.4412 323.5800 323.7189 323.8577 323.9965 324.1353 324.2741 324.4129 324.5516 324.6904 324.8291 324.9679
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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: 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 100-243: Unweighted slant column residuals for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting
Columns 244-387: 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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SU 20250917T092511.5Z 9391.392494 1808 1 53.43 2 56.74 140.52 32.22 211.80 0.00 1 0.00 1 0 17 3.911e-02 1.765e-02 8.437e-03 3.824e-03 2.206170e-01 1.962267e-03 2.941701e-03 -6.000000e+00 2.281742e-02 228.48 -2.00 3.84 -2.00 316.29 0.00e+00 -4.129914e-05 2.228938e-04 4.508369e-04 -6.000000e+00 1.000813e-03 280.03 -2.00 20.00 -2.00 315.63 0.00e+00 1.817 0.000 302.00 328.00 3 6.7062e+00 5.1094e-03 2.1876e-02 -6.0000e+00 5.6809e-02 1.2048e-01 5.7203e-03 1.2340e-02 -6.0000e+00 6.1670e-02 -1.3022e-02 3.2998e-03 5.9789e-03 -6.0000e+00 3.6689e-02 -3.5518e-03 1.5145e-03 1.7740e-03 -6.0000e+00 1.5309e-02 8.0221e-05 -8.9152e-04 1.1370e-04 2.2286e-05 -6.0000e+00 1.1157e-03 -4.3534e-03 0.0000e+00 12 9 8 11 8 0 99.98 24.68 1.43 -0.00435 -0.01105 17 2 1 5 0 3142.570 34.00 20.01 24.68 19.82 0.0 968.36 -9846 -9210 564 6670 16805 5620 -6468 15660 -6311 161 17151 6719 1495 -555 8868 -6559 -3729 -5188 6660 -1175 3164 -1531 -250 -565 1707 -895 -5239 2625 787 -7245 6706 -1515 10619 2247 -5210 -5388 3858 1382 -2467 -4660 2132 292 -2125 61 -2269 614 -1001 2248 -734 -1296 -2900 -861 3308 834 -612 1148 1882 1856 1724 -3945 1297 1818 5398 5017 4364 -187 -2183 -2612 436 1348 2651 -2198 -720 708 158 558 -1896 -3367 -4244 -1880 -1226 -1602 -470 -2815 -883 644 1297 -415 -434 572 554 1842 -1502 1514 -84 -1201 -1010 617 443 78 -693 -1357 -942 -1424 397 -742 -974 -611 -979 41 1266 953 1720 1696 2174 -896 -609 -1235 -291 2152 1689 828 -753 -177 1211 952 642 -2131 -2971 -935 394 1132 -1113 -1905 -1208 916 -1636 1270 1493 1566 316 -267 -722 -620 -1877 -1938 112 1197 2488 853 -1100 2342 -1321 34 3052 1326 328 -139 2292 -2178 -1270 -1848 2169 -427 1127 -574 -92 -215 670 -379 -2114 1034 296 -2800 2236 -581 3890 932 -2283 -2259 1491 614 -1234 -2796 1337 200 -1540 44 -1668 436 -712 1506 -491 -855 -1972 -604 2368 643 -495 933 1547 1536 1411 -3364 1054 1532 4713 4312 3894 -170 -1851 -2244 363 1214 2401 -2239 -742 710 152 494 -1687 -2763 -3406 -1564 -1132 -1514 -476 -3089 -1001 766 1512 -517 -552 711 659 2165 -1648 1482 -82 -1264 -1165 771 556 102 -898 -1638 -1131 -1676 480 -896 -1248 -812 -1357 59 1910 1497 2676 2520 2969 -1158 -807 -1645 -371 2864 2391 1210 -1104 -250 1615 1213 840 -2737 -3863 -1262 518 1538 -1570 -2762 -1812 1418 -2528 1963 2337 2457 494 -435 -1136 -961