File name: Pandora170s1_StGeorge_20250501_L2Fit_fout2c8d20220508p1-8.txt File generation date: 20250502T062227.8Z Data description: Level 2 spectral fitting results file Data file version: fout2c8p1-8 Local principal investigator: Vitali Fioletov Network principal investigator: Alexander Cede Instrument type: Pandora Instrument number: 170 Spectrometer number: 1 Processing software version used: BlickP v1.8.75 Instrument operation file used: Pandora170_OF_v11d20200302.txt Instrument calibration file used: Pandora170s1_CF_v8d20220508.txt Level 1 file used: Pandora170s1_StGeorge_20250501_L1_smca1c8d20220508p1-8.txt Full location name: University of Toronto - Downtown (St. George) campus Short location name: StGeorge Country of location: Canada Location latitude [deg]: 43.6605 Location longitude [deg]: -79.3986 Location altitude [m]: 176 Local noon date: 20250501 Notes on s-number (L1 configuration): Corrections NOT applied although requested by the s-number are latency correction, radiometric temperature correction, matrix method stray light correction (replaced by simple method) Data caveats: None First and last pixel inside fitting window: 215 357 Nominal wavelengths inside fitting window [nm]: 305.0405 305.1816 305.3227 305.4638 305.6048 305.7458 305.8869 306.0279 306.1689 306.3099 306.4509 306.5918 306.7328 306.8737 307.0147 307.1556 307.2965 307.4374 307.5783 307.7192 307.8600 308.0009 308.1417 308.2826 308.4234 308.5642 308.7050 308.8458 308.9866 309.1273 309.2681 309.4088 309.5496 309.6903 309.8310 309.9717 310.1124 310.2530 310.3937 310.5344 310.6750 310.8156 310.9562 311.0968 311.2374 311.3780 311.5186 311.6591 311.7997 311.9402 312.0808 312.2213 312.3618 312.5023 312.6427 312.7832 312.9237 313.0641 313.2045 313.3450 313.4854 313.6258 313.7662 313.9065 314.0469 314.1873 314.3276 314.4679 314.6082 314.7486 314.8889 315.0291 315.1694 315.3097 315.4499 315.5902 315.7304 315.8706 316.0108 316.1510 316.2912 316.4314 316.5715 316.7117 316.8518 316.9919 317.1320 317.2721 317.4122 317.5523 317.6924 317.8324 317.9725 318.1125 318.2525 318.3925 318.5325 318.6725 318.8125 318.9525 319.0924 319.2323 319.3723 319.5122 319.6521 319.7920 319.9319 320.0717 320.2116 320.3515 320.4913 320.6311 320.7709 320.9107 321.0505 321.1903 321.3301 321.4698 321.6096 321.7493 321.8890 322.0287 322.1684 322.3081 322.4478 322.5875 322.7271 322.8668 323.0064 323.1460 323.2856 323.4252 323.5648 323.7044 323.8439 323.9835 324.1230 324.2625 324.4021 324.5416 324.6810 324.8205 324.9600 --------------------------------------------------------------------------------------- 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 20250501T155326.5Z 9252.662112 247 1 50.20 2 33.23 142.34 62.67 76.40 0.00 1 0.00 1 0 17 1.260e-02 9.446e-03 1.010e-03 7.000e-04 1.679752e-01 3.604670e-04 2.047406e-03 -6.000000e+00 7.259030e-03 229.63 -2.00 3.57 -2.00 314.87 0.00e+00 4.306466e-04 2.994707e-05 3.531373e-05 -6.000000e+00 3.147584e-04 279.37 -2.00 20.00 -2.00 314.33 0.00e+00 1.195 0.000 302.00 328.00 3 3.7445e+00 9.2699e-04 1.4675e-02 -6.0000e+00 1.8136e-02 8.2272e-03 1.0293e-03 8.7337e-03 -6.0000e+00 1.9688e-02 -3.6463e-03 5.8789e-04 4.2554e-03 -6.0000e+00 1.1689e-02 -3.6108e-03 2.5635e-04 1.1935e-03 -6.0000e+00 4.9030e-03 3.3170e-03 2.7205e-04 1.9790e-05 1.5485e-05 -6.0000e+00 3.4297e-04 -1.1826e-03 0.0000e+00 12 8 8 10 0 0 99.93 22.93 0.30 -0.00118 0.00086 87 17 1 5 0 576.900 26.83 20.00 22.93 12.69 15.7 996.47 2235 1088 1076 -2054 -4025 -1923 -1143 1584 1075 -780 -3355 -2832 -385 -473 1225 624 -647 648 682 1740 1057 337 1092 1209 1247 1916 695 -588 -580 -419 825 746 2985 -594 -4169 -3635 -3843 -2200 -358 -538 -948 -645 -555 -648 -267 366 -440 -48 -1189 -469 753 755 981 1451 772 1279 1208 508 171 -66 333 1364 1847 2476 660 -728 -1049 -1945 642 1198 617 1044 655 1176 756 -229 -662 -2251 -809 -1225 -1241 -1306 -2605 -2084 -902 -660 126 575 1013 682 718 133 -1002 -99 -113 -71 466 1128 683 49 -281 -1685 -1107 45 -960 -1407 -579 -1111 -419 681 889 637 483 88 -129 12 -32 -170 706 242 99 362 764 411 1046 290 -495 953 483 290 248 -655 -312 40 47 -148 21 593 7 -50 56 -981 -804 717 383 383 -707 -1252 -588 -356 536 375 -289 -1249 -1041 -149 -205 541 299 -323 325 351 911 568 180 582 668 675 1063 386 -333 -304 -209 414 398 1655 -347 -2373 -1980 -2237 -1367 -244 -400 -771 -515 -453 -531 -217 294 -367 -38 -925 -357 586 623 803 1229 674 1129 1080 456 151 -58 301 1231 1786 2500 671 -688 -951 -1701 577 1140 614 1080 681 1180 750 -218 -567 -1938 -704 -1122 -1201 -1384 -2820 -2349 -1022 -801 154 720 1262 824 840 149 -1077 -101 -120 -78 536 1346 864 61 -346 -1939 -1276 51 -1186 -1768 -754 -1445 -565 917 1243 894 677 114 -159 14 -39 -214 909 321 136 492 1004 544 1303 362 -590 1116 600 366 326 -882 -424 53 67 -213 30 888 10 -75 80 -1380 -1160 SS 20250501T160752.8Z 9252.672139 256 1 49.65 2 31.74 148.20 60.21 78.48 0.00 1 0.00 1 0 17 1.293e-02 9.722e-03 1.219e-03 8.558e-04 1.650952e-01 4.407220e-04 2.020062e-03 -6.000000e+00 7.449301e-03 229.63 -2.00 3.57 -2.00 314.82 0.00e+00 4.898570e-04 3.600437e-05 3.309613e-05 -6.000000e+00 3.230094e-04 279.37 -2.00 20.00 -2.00 314.27 0.00e+00 1.175 0.000 302.00 328.00 3 4.1572e+00 1.1329e-03 1.4440e-02 -6.0000e+00 1.8612e-02 6.9094e-03 1.2573e-03 8.6078e-03 -6.0000e+00 2.0204e-02 -2.9713e-03 7.1888e-04 4.1965e-03 -6.0000e+00 1.1996e-02 -3.4778e-03 3.1270e-04 1.1858e-03 -6.0000e+00 5.0315e-03 2.2502e-03 2.3789e-04 2.4185e-05 1.5084e-05 -6.0000e+00 3.5196e-04 -1.1728e-03 0.0000e+00 12 8 8 10 0 0 99.59 22.92 0.28 -0.00117 0.00061 48 10 1 5 0 1034.080 26.83 20.00 22.92 13.11 15.8 996.31 2083 -80 1412 -1958 -3711 -2903 -625 1650 1384 -195 -3507 -2896 -1085 -77 1162 778 -712 928 609 1957 1377 -8 1410 1411 1389 1928 686 -836 -603 -13 520 1222 2749 -578 -4524 -3527 -3734 -2115 -141 -686 -1112 -661 -530 -617 201 243 -261 -347 -1271 -585 660 568 1033 1259 683 1367 1016 479 217 -63 375 1608 1773 2652 684 -436 -826 -2107 528 1193 612 977 668 1170 777 -234 -784 -2450 -1019 -1094 -1170 -1300 -2673 -2162 -1162 -791 116 651 1005 715 738 13 -975 -247 -86 -161 386 1153 776 -100 -278 -1491 -1287 44 -845 -1666 -668 -1198 -186 738 925 665 496 199 -99 83 -11 -188 626 339 84 405 604 437 1029 175 -510 1117 602 387 315 -678 -389 -114 85 -219 53 661 79 -109 19 -944 -923 704 -28 502 -708 -1210 -915 -198 540 504 -75 -1371 -1115 -441 -33 526 381 -364 475 321 999 721 -4 732 759 785 1117 398 -462 -322 -7 266 660 1486 -328 -2513 -1949 -2109 -1309 -98 -512 -908 -541 -443 -519 167 200 -210 -279 -992 -447 515 471 863 1092 609 1188 898 424 195 -57 334 1508 1726 2601 676 -413 -735 -1881 484 1139 622 1034 711 1200 774 -220 -685 -2108 -886 -1018 -1134 -1335 -2862 -2410 -1328 -939 140 808 1245 883 870 15 -1015 -252 -91 -175 446 1406 973 -124 -334 -1720 -1466 52 -1018 -2085 -864 -1572 -252 1016 1288 930 681 259 -124 101 -14 -231 799 452 116 554 801 573 1308 220 -609 1309 749 497 409 -903 -522 -154 117 -312 77 983 115 -161 27 -1356 -1304