File name: Pandora77s1_Singapore-NUS_20250312_L2Fit_fout2c3d20230113p1-8.txt File generation date: 20250312T171629.1Z Data description: Level 2 spectral fitting results file Data file version: fout2c3p1-8 Local principal investigator: Santo V. Salinas Network principal investigator: Alexander Cede Instrument type: Pandora Instrument number: 77 Spectrometer number: 1 Processing software version used: BlickP v1.8.74 Instrument operation file used: Pandora77_OF_v2d20220405.txt Instrument calibration file used: Pandora77s1_CF_v3d20230113.txt Level 1 file used: Pandora77s1_Singapore-NUS_20250312_L1_smca1c3d20230113p1-8.txt Full location name: Centre for Remote Imaging Sensing and Processing (CRISP), National University of Short location name: Singapore-NUS Country of location: Singapore Location latitude [deg]: 1.2990 Location longitude [deg]: 103.7710 Location altitude [m]: 77 Local noon date: 20250312 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: None First and last pixel inside fitting window: 196 338 Nominal wavelengths inside fitting window [nm]: 305.0008 305.1420 305.2832 305.4244 305.5656 305.7068 305.8480 305.9891 306.1303 306.2714 306.4126 306.5537 306.6948 306.8359 306.9770 307.1181 307.2591 307.4002 307.5412 307.6822 307.8233 307.9643 308.1053 308.2463 308.3872 308.5282 308.6691 308.8101 308.9510 309.0919 309.2328 309.3737 309.5146 309.6555 309.7964 309.9372 310.0780 310.2189 310.3597 310.5005 310.6413 310.7821 310.9228 311.0636 311.2043 311.3451 311.4858 311.6265 311.7672 311.9079 312.0486 312.1893 312.3299 312.4706 312.6112 312.7518 312.8924 313.0331 313.1736 313.3142 313.4548 313.5953 313.7359 313.8764 314.0169 314.1574 314.2979 314.4384 314.5789 314.7194 314.8598 315.0003 315.1407 315.2811 315.4215 315.5619 315.7023 315.8427 315.9830 316.1234 316.2637 316.4040 316.5444 316.6847 316.8250 316.9652 317.1055 317.2458 317.3860 317.5262 317.6665 317.8067 317.9469 318.0871 318.2272 318.3674 318.5076 318.6477 318.7878 318.9279 319.0680 319.2081 319.3482 319.4883 319.6284 319.7684 319.9084 320.0485 320.1885 320.3285 320.4685 320.6085 320.7484 320.8884 321.0283 321.1683 321.3082 321.4481 321.5880 321.7279 321.8678 322.0076 322.1475 322.2873 322.4271 322.5670 322.7068 322.8466 322.9863 323.1261 323.2659 323.4056 323.5454 323.6851 323.8248 323.9645 324.1042 324.2439 324.3835 324.5232 324.6628 324.8025 324.9421 --------------------------------------------------------------------------------------- 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 20250312T094015.1Z 9202.402952 8 1 50.54 2 66.53 266.01 95.18 76.51 0.00 1 0.00 1 0 17 1.398e-02 6.065e-03 6.041e-03 1.407e-03 2.653854e-01 7.118333e-04 2.781736e-03 -6.000000e+00 8.046157e-03 226.67 -2.00 3.05 -2.00 317.99 0.00e+00 5.368833e-04 1.274212e-04 3.468666e-04 -6.000000e+00 3.743372e-04 294.33 -2.00 20.00 -2.00 317.01 0.00e+00 2.492 0.000 302.00 328.00 3 3.5364e+00 1.9071e-03 2.7113e-02 -6.0000e+00 1.9853e-02 3.3996e-02 2.1729e-03 1.2055e-02 -6.0000e+00 2.1517e-02 -3.5112e-03 1.3539e-03 5.8296e-03 -6.0000e+00 1.2920e-02 -5.8738e-03 6.9545e-04 1.6122e-03 -6.0000e+00 5.5790e-03 9.8698e-04 -1.7315e-04 4.2324e-05 1.8793e-05 -6.0000e+00 3.8903e-04 -8.1446e-03 2.5186e-05 11 1 0 11 16 0 99.96 25.22 0.46 -0.00814 -0.00945 85 16 1 5 0 594.480 27.45 20.00 25.22 34.71 12.8 1010.76 900000 608 -3182 -2780 -2220 -6858 -1969 -4302 492 -4796 -1390 -3795 -2160 -1381 -1232 1343 -415 1598 -136 1437 -179 189 767 1503 693 730 -138 -2424 419 -2495 1286 -517 1325 -1027 -2761 -4077 -3621 -1524 -1166 -152 -501 -487 -568 -250 147 7 -19 -183 -476 -778 717 592 1207 723 1127 722 1079 607 178 575 481 1795 1644 2111 923 28 -388 -454 64 409 428 839 868 412 372 -312 -1163 -1968 -1706 -1708 -1371 -1355 -1952 -1521 -592 -123 145 397 918 624 557 -228 -318 -454 -241 -65 315 740 503 -193 -714 -950 -960 -487 -1132 -836 -700 -334 97 505 647 440 407 -62 -20 30 -317 172 192 274 139 527 400 441 296 -25 198 354 54 -70 -64 -137 -245 -55 15 161 258 201 155 -74 -165 -520 -562 900000 46 -264 -226 -162 -479 -132 -326 40 -446 -127 -390 -236 -172 -176 211 -71 278 -25 272 -35 37 151 308 152 167 -32 -562 88 -517 265 -117 320 -270 -715 -1014 -937 -441 -402 -61 -229 -236 -286 -128 75 4 -10 -91 -231 -377 355 315 679 432 698 459 699 397 115 365 311 1217 1215 1518 688 22 -280 -315 46 325 345 712 746 346 294 -248 -838 -1337 -1174 -1304 -1179 -1177 -1843 -1504 -617 -137 171 486 1128 750 626 -237 -302 -451 -225 -67 358 929 680 -263 -929 -1143 -1082 -552 -1392 -1094 -958 -477 145 735 996 694 626 -89 -29 41 -424 238 283 433 208 851 631 670 428 -35 260 461 74 -104 -100 -223 -406 -87 24 283 467 373 290 -136 -293 -893 -944 SS 20250312T095338.0Z 9202.412245 17 1 50.60 2 69.87 266.18 92.02 76.66 0.00 1 0.00 1 0 17 1.397e-02 6.500e-03 8.138e-04 2.444e-04 3.049212e-01 1.247126e-04 3.174530e-03 -6.000000e+00 8.037548e-03 226.67 -2.00 3.05 -2.00 317.37 0.00e+00 7.993548e-04 1.913958e-05 2.320670e-04 -6.000000e+00 3.740201e-04 294.33 -2.00 20.00 -2.00 316.43 0.00e+00 2.874 0.000 302.00 328.00 3 3.7617e-01 3.2917e-04 3.1204e-02 -6.0000e+00 1.9832e-02 1.5107e-02 3.7194e-04 1.3681e-02 -6.0000e+00 2.1495e-02 -1.3157e-02 2.2438e-04 6.6454e-03 -6.0000e+00 1.2907e-02 8.0630e-05 1.1241e-04 1.8816e-03 -6.0000e+00 5.5726e-03 1.5408e-02 -3.1969e-04 7.1405e-06 2.1179e-05 -6.0000e+00 3.8872e-04 -7.7753e-03 -6.2576e-06 11 8 0 10 0 0 99.21 25.23 0.33 -0.00778 -0.01018 1279 242 1 5 0 39.460 27.45 20.00 25.23 34.43 12.8 1008.73 900000 -2081 -1341 -3088 -4141 -6010 -4773 -2591 -2233 -2464 -4111 -3893 -3181 -1475 -203 533 892 641 1491 1519 1906 1023 1469 949 1068 560 79 -650 -1449 -958 -424 619 630 -526 -2604 -3591 -3275 -2250 -936 -511 -200 -207 88 68 390 289 8 -167 -674 -421 275 853 1019 1108 965 924 729 457 253 374 888 1227 1907 1838 1057 164 -429 -540 223 795 654 743 529 519 -8 -483 -1223 -1722 -1559 -1561 -1510 -1629 -1880 -1717 -914 -336 147 495 831 762 535 172 -270 -85 -275 -45 422 774 407 -237 -516 -996 -684 -568 -817 -957 -694 -475 17 620 624 521 269 87 -225 57 -162 360 320 320 200 430 491 347 400 -76 216 487 225 -34 -200 -161 -211 36 -115 112 282 345 148 -115 -309 -489 -653 900000 -210 -143 -332 -407 -553 -440 -258 -250 -301 -521 -496 -442 -234 -37 100 180 136 330 350 452 245 353 241 288 159 23 -185 -388 -247 -114 180 201 -181 -892 -1181 -1125 -803 -395 -236 -104 -115 51 40 229 170 5 -97 -387 -241 164 506 646 744 679 623 504 319 174 253 609 893 1508 1476 882 131 -342 -416 177 661 571 687 497 474 -7 -403 -989 -1316 -1218 -1279 -1404 -1593 -1888 -1815 -1021 -380 176 581 983 925 609 190 -276 -88 -281 -51 501 970 526 -310 -673 -1203 -810 -677 -1000 -1252 -904 -649 24 904 927 798 404 129 -308 76 -215 493 446 477 293 653 727 496 570 -104 295 661 310 -49 -303 -242 -326 58 -187 192 479 598 259 -198 -535 -815 -1064 SS 20250312T100420.1Z 9202.419677 20 1 50.36 2 72.54 266.30 89.50 76.76 0.00 1 0.00 1 0 17 2.415e-02 6.768e-03 3.409e-03 7.197e-04 3.437424e-01 3.663570e-04 3.568282e-03 -6.000000e+00 1.389982e-02 226.67 -2.00 3.05 -2.00 317.95 0.00e+00 9.651251e-04 6.644689e-05 4.218666e-04 -6.000000e+00 6.468386e-04 294.33 -2.00 20.00 -2.00 317.01 0.00e+00 3.284 0.000 302.00 328.00 3 2.0545e+00 9.8084e-04 3.5581e-02 -6.0000e+00 3.4297e-02 2.1081e-02 1.1180e-03 1.5517e-02 -6.0000e+00 3.7173e-02 -1.7821e-02 7.0397e-04 7.5237e-03 -6.0000e+00 2.2322e-02 2.4299e-03 3.6369e-04 2.1088e-03 -6.0000e+00 9.6366e-03 1.8452e-03 -2.9640e-04 2.0962e-05 2.4015e-05 -6.0000e+00 6.7227e-04 -7.2150e-03 3.8415e-06 11 8 0 10 0 0 98.97 25.23 0.36 -0.00722 -0.00944 165 31 1 5 0 305.170 27.45 20.00 25.23 34.69 12.8 1010.73 900000 -5304 -3338 -7179 -3046 -10925 -8871 -2099 -7033 -7934 -7774 -10966 -5862 -5744 518 -567 999 -876 1132 1145 2476 1883 935 556 496 -42 -216 -1021 -888 -1487 -786 -667 1028 -473 -3179 -3387 -3483 -2234 -1061 -405 557 61 331 335 430 233 416 -228 -892 -252 389 846 1172 1262 1315 987 800 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