File name: Pandora222s1_DaNang_20250316_L2Fit_fout2c4d20240301p1-8.txt File generation date: 20260416T093038.8Z Data description: Level 2 spectral fitting results file Data file version: fout2c4p1-8 Local principal investigator: Nhat Minh Nguyen Network principal investigator: Alexander Cede Instrument type: Pandora Instrument number: 222 Spectrometer number: 1 Processing software version used: BlickP v1.8.88 Instrument operation file used: Pandora222_OF_v2d20220422.txt Instrument calibration file used: Pandora222s1_CF_v4d20240301.txt Level 1 file used: Pandora222s1_DaNang_20250316_L1_smca1c4d20240301p1-8.txt Full location name: Middle and Highland Ctr for Env. Monitoring (MHCEM) Short location name: DaNang Country of location: Vietnam Location latitude [deg]: 16.0005 Location longitude [deg]: 108.2104 Location altitude [m]: 30 Local noon date: 20250316 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: 198 339 Nominal wavelengths inside fitting window [nm]: 305.1156 305.2571 305.3986 305.5401 305.6816 305.8231 305.9646 306.1060 306.2475 306.3889 306.5303 306.6718 306.8132 306.9546 307.0960 307.2373 307.3787 307.5200 307.6614 307.8027 307.9440 308.0853 308.2266 308.3679 308.5092 308.6505 308.7917 308.9330 309.0742 309.2154 309.3566 309.4978 309.6390 309.7802 309.9214 310.0625 310.2037 310.3448 310.4859 310.6271 310.7682 310.9092 311.0503 311.1914 311.3325 311.4735 311.6145 311.7556 311.8966 312.0376 312.1786 312.3196 312.4605 312.6015 312.7424 312.8834 313.0243 313.1652 313.3061 313.4470 313.5879 313.7288 313.8697 314.0105 314.1513 314.2922 314.4330 314.5738 314.7146 314.8554 314.9962 315.1369 315.2777 315.4184 315.5591 315.6999 315.8406 315.9813 316.1219 316.2626 316.4033 316.5439 316.6846 316.8252 316.9658 317.1064 317.2470 317.3876 317.5282 317.6688 317.8093 317.9499 318.0904 318.2309 318.3714 318.5119 318.6524 318.7929 318.9333 319.0738 319.2142 319.3547 319.4951 319.6355 319.7759 319.9163 320.0567 320.1970 320.3374 320.4777 320.6180 320.7584 320.8987 321.0390 321.1793 321.3195 321.4598 321.6000 321.7403 321.8805 322.0207 322.1609 322.3011 322.4413 322.5815 322.7217 322.8618 323.0020 323.1421 323.2822 323.4223 323.5624 323.7025 323.8426 323.9826 324.1227 324.2627 324.4028 324.5428 324.6828 324.8228 324.9628 --------------------------------------------------------------------------------------- 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 100-241: Unweighted slant column residuals for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting Columns 242-383: 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 20250316T050007.3Z 9206.208418 431 1 51.16 2 17.68 183.55 161.44 292.03 0.00 1 0.00 1 0 17 8.758e-03 7.378e-03 1.534e-03 1.182e-03 1.245685e-01 6.215053e-04 1.333671e-03 -6.000000e+00 5.117955e-03 227.56 -2.00 3.10 -2.00 314.30 0.00e+00 2.951608e-04 4.898148e-05 3.796740e-05 -6.000000e+00 2.380690e-04 293.40 -2.00 20.00 -2.00 313.63 0.00e+00 1.049 0.000 302.00 328.00 3 5.6842e+00 1.5794e-03 1.1794e-02 -6.0000e+00 1.2650e-02 4.3555e-02 1.7508e-03 5.6187e-03 -6.0000e+00 1.3715e-02 -1.2071e-03 1.0057e-03 2.7257e-03 -6.0000e+00 8.2286e-03 -5.3379e-03 4.3452e-04 7.5724e-04 -6.0000e+00 3.5031e-03 5.9336e-04 2.5775e-05 3.5134e-05 1.1470e-05 -6.0000e+00 2.5596e-04 3.1691e-03 0.0000e+00 11 8 0 10 0 0 99.99 23.41 0.54 0.00317 0.00336 61 10 1 5 0 838.500 25.58 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-847 -1310 -625 -1299 -1707 -1955 -2304 -1788 -729 -569 -84 584 1077 671 566 102 -209 285 30 -157 141 944 75 -448 -606 -810 -537 -139 -1487 -1541 -916 -514 1 1056 1216 595 759 265 95 93 179 217 526 53 -38 689 783 615 656 121 333 1127 365 -3 -372 -442 -509 325 121 -76 381 481 60 -71 -698 -891 -1087 SS 20250316T081335.9Z 9206.342777 552 1 51.46 2 51.91 254.84 150.89 79.95 0.00 1 0.00 1 0 17 8.724e-03 6.817e-03 7.178e-04 4.553e-04 1.847919e-01 2.367145e-04 1.973146e-03 -6.000000e+00 5.098535e-03 227.57 -2.00 3.10 -2.00 315.35 0.00e+00 3.893470e-04 2.296844e-05 6.893949e-05 -6.000000e+00 2.371452e-04 293.40 -2.00 20.00 -2.00 314.57 0.00e+00 1.617 0.000 302.00 328.00 3 3.2161e+00 6.0758e-04 1.8030e-02 -6.0000e+00 1.2602e-02 1.9047e-02 6.7694e-04 8.3752e-03 -6.0000e+00 1.3662e-02 -5.1938e-04 3.8719e-04 4.0606e-03 -6.0000e+00 8.1972e-03 -5.7380e-03 1.7310e-04 1.1283e-03 -6.0000e+00 3.4899e-03 3.5752e-03 -1.9080e-05 1.3654e-05 1.5523e-05 -6.0000e+00 2.5496e-04 2.6662e-03 0.0000e+00 11 8 0 10 0 0 99.97 23.63 0.35 0.00267 0.00252 277 46 1 5 0 185.760 25.68 20.00 23.63 33.96 20.0 1024.94 -1120 -1173 -2273 -3128 -1197 -39 681 113 -831 -1990 -968 366 141 162 490 -439 644 755 1091 837 295 1439 1414 662 532 -40 -873 -410 596 1697 1165 1297 -568 -2808 -1390 -914 -689 -42 -362 -1134 -743 -576 -541 -318 -150 -761 -548 -625 96 988 750 661 945 784 888 988 346 376 553 1178 1408 1646 1350 65 -658 74 13 915 824 112 379 201 510 -41 -411 -752 -1044 -650 -1089 -1754 -1694 -2275 -1692 -728 -605 -45 204 569 392 286 197 82 564 474 -129 332 675 -147 -593 -647 -811 -342 118 -1057 -1167 -721 -503 88 502 496 311 284 180 113 518 457 439 502 203 -100 287 496 459 649 245 338 1118 360 93 -194 -350 -229 262 46 -91 109 253 -205 -240 -352 -623 -614 -326 -358 -686 -862 -321 -10 192 32 -259 -638 -304 119 51 60 201 -192 285 344 509 401 142 686 698 319 265 -20 -431 -201 273 777 562 661 -308 -1506 -700 -478 -377 -25 -255 -842 -580 -435 -415 -243 -121 -605 -420 -464 70 726 584 542 762 655 754 849 300 321 468 1011 1276 1511 1317 65 -615 67 11 798 752 114 384 206 509 -41 -396 -653 -899 -562 -974 -1664 -1768 -2425 -1882 -813 -724 -54 252 709 475 339 224 85 582 504 -142 381 811 -188 -754 -780 -957 -402 134 -1315 -1469 -946 -656 120 683 704 445 389 240 144 650 569 543 665 275 -140 398 672 625 834 316 415 1362 466 121 -265 -469 -310 367 65 -135 166 380 -311 -372 -528 -910 -885 SS 20250316T083523.0Z 9206.357905 568 1 51.82 2 56.99 257.25 145.95 82.78 0.00 1 0.00 1 0 17 9.503e-03 6.752e-03 2.012e-03 1.096e-03 2.078676e-01 5.660231e-04 2.208695e-03 -6.000000e+00 5.553624e-03 227.57 -2.00 3.10 -2.00 315.91 0.00e+00 4.443389e-04 6.147304e-05 1.093565e-04 -6.000000e+00 2.583181e-04 293.40 -2.00 20.00 -2.00 315.07 0.00e+00 1.829 0.000 302.00 328.00 3 4.6868e+00 1.4638e-03 2.0365e-02 -6.0000e+00 1.3727e-02 3.0979e-02 1.6394e-03 9.4136e-03 -6.0000e+00 1.4882e-02 1.8886e-04 9.3776e-04 4.5653e-03 -6.0000e+00 8.9290e-03 -6.5870e-03 4.2714e-04 1.2680e-03 -6.0000e+00 3.8014e-03 6.3690e-04 3.6195e-06 3.2903e-05 1.6624e-05 -6.0000e+00 2.7773e-04 2.8632e-03 0.0000e+00 11 8 0 10 0 0 99.99 23.65 0.38 0.00286 0.00289 53 9 1 5 0 977.540 25.68 20.00 23.65 33.98 20.0 1022.29 -1123 -2614 -2677 -3494 134 -1120 830 -631 -469 -2640 -1516 248 -945 965 377 -156 79 1008 969 938 248 1961 1179 711 685 -263 -1034 -685 991 1215 1455 1029 101 -3104 -1468 -1355 -409 -72 -382 -949 -682 -510 -400 16 -64 -740 -370 -469 -279 1370 418 751 648 831 954 876 180 287 653 1095 1600 1748 1445 -11 -433 -61 -175 887 746 330 335 97 568 -114 -312 -620 -1192 -494 -1355 -1709 -1696 -2201 -1672 -695 -424 -116 338 614 517 319 188 18 448 151 -81 100 640 -151 -707 -629 -1004 -392 -64 -952 -1235 -639 -456 -26 547 749 444 352 182 113 384 357 397 594 164 -85 491 436 379 508 89 63 1092 369 90 -237 -324 -275 397 3 -105 204 281 -111 -198 -364 -536 -691 -256 -636 -640 -764 28 -240 171 -146 -117 -685 -387 66 -283 319 128 -56 29 383 380 377 100 783 493 312 312 -122 -469 -287 388 482 609 460 48 -1469 -652 -628 -213 -40 -236 -659 -500 -359 -286 12 -49 -557 -269 -331 -194 963 315 555 503 668 780 728 151 237 533 908 1397 1540 1357 -11 -391 -54 -148 764 669 328 331 97 586 -112 -296 -530 -1026 -427 -1213 -1609 -1761 -2319 -1841 -763 -498 -143 410 748 646 370 211 19 464 162 -89 115 808 -193 -898 -798 -1188 -463 -77 -1180 -1542 -831 -619 -35 773 1103 661 505 256 146 490 452 522 793 223 -119 680 621 518 655 115 78 1347 484 119 -328 -462 -379 563 4 -158 316 445 -177 -308 -550 -826 -1050