File name: Pandora66s1_HuntsvilleAL_20200323_L2Fit_fout2c3d20200122p1-8.txt File generation date: 20251117T154134.4Z Data description: Level 2 spectral fitting results file Data file version: fout2c3p1-8 Local principal investigator: Nader Abuhassan Network principal investigator: Alexander Cede Instrument type: Pandora Instrument number: 66 Spectrometer number: 1 Processing software version used: BlickP v1.8.75 Instrument operation file used: Pandora66_OF_v1d20200114.txt Instrument calibration file used: Pandora66s1_CF_v3d20200122.txt Level 1 file used: Pandora66s1_HuntsvilleAL_20200323_L1_smca1c3d20200122p1-8.txt Full location name: The University of Alabama in Huntsville- SWIRLL Short location name: HuntsvilleAL Country of location: United States Location latitude [deg]: 34.7252 Location longitude [deg]: -86.6464 Location altitude [m]: 221 Local noon date: 20200323 Notes on s-number (L1 configuration): Corrections NOT applied although requested by the s-number are dark map for dark correction (replaced by immediate dark method), latency correction, matrix method stray light correction (replaced by simple method) Data caveats: Modification of session 1, fieldcal refday 20200921 First and last pixel inside fitting window: 253 395 Nominal wavelengths inside fitting window [nm]: 305.1019 305.2425 305.3831 305.5238 305.6644 305.8050 305.9456 306.0862 306.2268 306.3673 306.5079 306.6484 306.7890 306.9295 307.0700 307.2105 307.3510 307.4914 307.6319 307.7723 307.9128 308.0532 308.1936 308.3340 308.4744 308.6148 308.7551 308.8955 309.0358 309.1762 309.3165 309.4568 309.5971 309.7374 309.8777 310.0179 310.1582 310.2984 310.4386 310.5789 310.7191 310.8593 310.9994 311.1396 311.2798 311.4199 311.5600 311.7002 311.8403 311.9804 312.1205 312.2605 312.4006 312.5407 312.6807 312.8207 312.9607 313.1007 313.2407 313.3807 313.5207 313.6606 313.8006 313.9405 314.0805 314.2204 314.3603 314.5002 314.6400 314.7799 314.9197 315.0596 315.1994 315.3392 315.4790 315.6188 315.7586 315.8984 316.0381 316.1779 316.3176 316.4573 316.5970 316.7367 316.8764 317.0161 317.1558 317.2954 317.4351 317.5747 317.7143 317.8539 317.9935 318.1331 318.2727 318.4122 318.5518 318.6913 318.8308 318.9703 319.1098 319.2493 319.3888 319.5282 319.6677 319.8071 319.9465 320.0860 320.2254 320.3647 320.5041 320.6435 320.7828 320.9222 321.0615 321.2008 321.3401 321.4794 321.6187 321.7580 321.8972 322.0365 322.1757 322.3149 322.4542 322.5934 322.7325 322.8717 323.0109 323.1500 323.2892 323.4283 323.5674 323.7065 323.8456 323.9847 324.1238 324.2628 324.4019 324.5409 324.6799 324.8189 324.9579 --------------------------------------------------------------------------------------- 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: Azimuth motor temperature [°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 101-243: Unweighted slant column residuals for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting Columns 244-386: 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 --------------------------------------------------------------------------------------- SU 20200323T200502.0Z 7387.836829 7657 1 30.09 2 45.31 230.03 53.72 228.05 0.00 1 0.00 1 0 17 7.435e-03 5.358e-03 1.404e-03 8.403e-04 1.801880e-01 4.323730e-04 2.119965e-03 -6.000000e+00 4.290618e-03 227.46 -2.00 3.38 -2.00 315.52 0.00e+00 2.565478e-04 4.101639e-05 2.973118e-05 -6.000000e+00 1.888618e-04 281.44 -2.00 20.00 -2.00 314.90 0.00e+00 1.420 0.000 302.00 328.00 3 3.9379e+00 1.1140e-03 1.6459e-02 -6.0000e+00 1.0654e-02 3.0543e-02 1.2406e-03 8.9222e-03 -6.0000e+00 1.1569e-02 -1.0635e-03 7.1147e-04 4.3801e-03 -6.0000e+00 6.8895e-03 -3.6651e-03 3.1918e-04 1.2428e-03 -6.0000e+00 2.9168e-03 2.1540e-03 -3.4423e-04 2.4598e-05 1.6542e-05 -6.0000e+00 2.0891e-04 -1.3076e-02 0.0000e+00 10 0 0 10 0 0 99.96 26.41 0.21 -0.01308 -0.01566 97 97 1 5 0 310.140 26.41 20.00 23.08 25.43 50.10 21.8 993.18 -844 -1600 -1530 -3356 -1789 -1149 648 819 814 -679 -766 292 280 420 471 -6 133 419 606 1003 590 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-678 -718 -424 30 86 167 132 92 155 189 351 327 293 -30 -225 56 33 173 675 629 872 1181 850 533 283 -218 -26 -42 -37 -144 28 136 -181 -392 -242 -687 -723 SU 20200323T200736.5Z 7387.838617 7661 1 30.98 2 45.71 230.73 54.10 228.67 0.00 1 0.00 1 0 17 7.761e-03 5.618e-03 3.064e-03 1.716e-03 1.849012e-01 8.806923e-04 2.177178e-03 -6.000000e+00 4.479166e-03 227.46 -2.00 3.38 -2.00 315.78 0.00e+00 3.093473e-04 8.804612e-05 2.763677e-05 -6.000000e+00 1.971582e-04 281.44 -2.00 20.00 -2.00 315.13 0.00e+00 1.430 0.000 302.00 328.00 3 5.1662e+00 2.2734e-03 1.6680e-02 -6.0000e+00 1.1122e-02 4.8374e-02 2.5352e-03 9.1615e-03 -6.0000e+00 1.2077e-02 -1.9410e-03 1.4562e-03 4.5029e-03 -6.0000e+00 7.1922e-03 -4.1482e-03 6.6146e-04 1.2823e-03 -6.0000e+00 3.0450e-03 6.1417e-04 -3.8293e-04 5.0473e-05 1.6728e-05 -6.0000e+00 2.1809e-04 -1.3215e-02 0.0000e+00 10 0 0 10 0 0 99.89 26.41 0.22 -0.01321 -0.01609 38 38 1 5 0 794.090 26.41 20.00 23.09 25.56 50.40 21.9 994.32 -301 -1454 -299 -3249 -1636 -1600 542 297 863 -971 -857 -691 675 -171 475 -890 833 346 619 743 954 1036 1592 350 -167 94 -486 -536 112 1321 1364 1831 1452 -729 -2149 -643 -1216 -346 -738 -192 -749 -708 -805 -960 -38 -521 -583 -1004 -1254 69 310 813 707 998 625 1061 666 703 -73 658 815 897 1434 767 -57 -448 -469 -207 622 426 467 72 190 296 280 -304 -206 -518 -11 -874 -864 -1068 -1786 -1221 -716 -548 -230 -70 323 379 355 184 706 779 477 449 568 420 285 -269 -451 -896 -197 267 -836 -888 -730 -495 -170 428 66 198 318 -17 -65 205 -47 -140 98 -77 -256 -64 271 304 525 430 724 882 463 461 323 -302 -24 -199 144 -62 206 262 -38 -232 -78 -785 -492 -72 -372 -76 -772 -366 -347 122 74 218 -258 -222 -182 193 -55 170 -345 325 139 256 314 406 436 681 158 -79 45 -233 -239 46 524 563 792 670 -345 -962 -281 -586 -179 -454 -135 -536 -524 -611 -732 -28 -389 -423 -706 -913 50 232 599 546 802 516 885 564 590 -61 543 694 815 1310 739 -54 -415 -400 -171 538 414 465 75 197 295 276 -271 -166 -421 -9 -767 -843 -1075 -1923 -1368 -808 -661 -291 -91 419 472 408 204 710 797 480 494 650 529 377 -350 -553 -1087 -226 315 -1021 -1146 -983 -657 -235 619 99 299 460 -23 -85 248 -56 -176 132 -105 -360 -90 369 419 681 530 896 1084 601 598 438 -422 -34 -275 209 -95 324 422 -59 -371 -121 -1187 -725 SU 20200323T204137.2Z 7387.862237 7823 1 6.48 2 51.43 239.14 59.45 236.26 0.00 1 0.00 1 0 17 9.167e-03 6.060e-03 4.135e-03 2.509e-03 2.050873e-01 1.287868e-03 2.412749e-03 -6.000000e+00 5.290434e-03 227.46 -2.00 3.38 -2.00 315.47 0.00e+00 3.623373e-04 1.215946e-04 2.680435e-05 -6.000000e+00 2.328596e-04 281.44 -2.00 20.00 -2.00 314.85 0.00e+00 1.600 0.000 302.00 328.00 3 4.3507e+00 3.3131e-03 1.8605e-02 -6.0000e+00 1.3136e-02 3.8423e-02 3.6919e-03 1.0147e-02 -6.0000e+00 1.4264e-02 -5.7677e-03 2.1150e-03 4.9806e-03 -6.0000e+00 8.4947e-03 -1.8261e-03 9.4907e-04 1.4159e-03 -6.0000e+00 3.5967e-03 1.1397e-03 -4.3311e-04 7.2939e-05 1.8754e-05 -6.0000e+00 2.5757e-04 -1.3542e-02 0.0000e+00 12 1 1 12 1 1 99.51 26.41 0.17 -0.01354 -0.01680 6 33 1 5 0 900.840 26.41 20.00 23.10 26.88 50.60 22.0 1000.34 290 -2289 -1256 -4870 1818 -853 699 786 2151 -1593 116 -927 -99 -269 71 -757 -229 428 185 1547 844 25 1388 751 503 499 602 1064 -1214 855 930 3288 906 -946 -2036 -1056 -1530 -387 -825 -140 -1847 -391 -812 -699 -531 -326 -882 -836 -842 150 479 1235 977 398 575 958 576 -266 373 553 673 1486 1545 1266 162 -651 -156 99 1004 375 -380 -173 -103 11 657 212 -73 -684 343 -249 -680 -837 -1810 -1252 -476 -585 -174 -69 206 -5 310 335 29 654 303 283 -37 612 -284 103 -467 -552 -145 103 -744 -248 -668 -820 -490 78 53 -196 72 176 173 516 63 512 446 -229 -420 35 76 512 408 597 695 1138 769 224 393 -78 380 -23 -106 -155 72 -7 -42 -233 -186 -743 -565 79 -641 -370 -1366 425 -199 170 212 628 -470 35 -291 -32 -99 27 -316 -98 187 84 710 372 12 653 353 247 251 299 490 -561 381 433 1586 452 -484 -984 -501 -801 -221 -535 -99 -1377 -298 -637 -550 -415 -253 -668 -613 -627 111 353 959 798 328 485 818 499 -231 316 467 587 1322 1478 1227 156 -602 -139 85 907 353 -393 -179 -106 11 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