De Backer H. DOBSON UCCLE TOTALCOL 01-MAR-1990 00:00:0031-MAR-1990 23:59:590001 30 1010 Hugo De Backer Uccle; Royal Meteorological Institute Belgium Dobson Spectrophotometer Instrument No.40 NDSC 1 1 1990 03 01 2002 05 21 0 Day of year 2 1.000 1.0E+18 9.999 99.999 O3 Air Mass Factor O3 Vertical Column Density (molecules/cm**2) 9 1 1 1 1 1 1.0 1.0 1 1.0 9999 99 99 99 99 999.9 999.9 9999 99.999 Year of observation (UT) Month of observation (UT) Day of observation (UT) Hour of observation (UT) Minute of observation (UT) Latitude observation point (degrees) Longitude observation point (degrees) Elevation of station above MSL (m) Solar zenith angle at time of observation (degrees) 1 1 1.382 1990 03 01 09 10 50.80 -4.35 100 68.396 2.659 10.222 1.429 1990 03 01 10 18 50.80 -4.35 100 62.037 2.107 9.870 1.506 1990 03 01 12 08 50.80 -4.35 100 58.450 1.894 9.547 1.530 1990 03 01 12 42 50.80 -4.35 100 59.278 1.939 9.746 1.573 1990 03 01 13 45 50.80 -4.35 100 63.035 2.177 9.897 2.500 1990 03 02 12 00 50.80 -4.35 100 58.008 1.871 10.646 2.544 1990 03 02 13 03 50.80 -4.35 100 59.868 1.972 10.557 2.547 1990 03 02 13 07 50.80 -4.35 100 60.047 1.983 10.557 3.356 1990 03 03 08 32 50.80 -4.35 100 72.230 3.173 9.523 3.376 1990 03 03 09 01 50.80 -4.35 100 68.592 2.681 9.496 4.354 1990 03 04 08 29 50.80 -4.35 100 72.160 3.162 9.349 5.375 1990 03 05 08 59 50.80 -4.35 100 68.143 2.631 9.523 5.422 1990 03 05 10 07 50.80 -4.35 100 61.366 2.063 9.448 5.516 1990 03 05 12 22 50.80 -4.35 100 57.165 1.829 9.225 5.545 1990 03 05 13 04 50.80 -4.35 100 58.830 1.914 9.298 5.571 1990 03 05 13 42 50.80 -4.35 100 61.428 2.067 9.496 6.367 1990 03 06 08 47 50.80 -4.35 100 69.155 2.747 9.174 6.412 1990 03 06 09 52 50.80 -4.35 100 62.203 2.119 8.779 6.502 1990 03 06 12 02 50.80 -4.35 100 56.490 1.797 8.457 6.570 1990 03 06 13 40 50.80 -4.35 100 60.912 2.035 8.656 7.362 1990 03 07 08 41 50.80 -4.35 100 69.577 2.798 8.408 7.455 1990 03 07 10 55 50.80 -4.35 100 57.486 1.845 8.408 7.570 1990 03 07 13 40 50.80 -4.35 100 60.584 2.015 8.360 8.353 1990 03 08 08 28 50.80 -4.35 100 70.890 2.972 8.704 8.419 1990 03 08 10 03 50.80 -4.35 100 60.492 2.009 8.827 8.445 1990 03 08 10 40 50.80 -4.35 100 57.886 1.865 8.827 8.532 1990 03 08 12 46 50.80 -4.35 100 56.809 1.812 8.656 8.574 1990 03 08 13 46 50.80 -4.35 100 60.713 2.022 8.677 8.575 1990 03 08 13 47 50.80 -4.35 100 60.804 2.028 8.731 9.358 1990 03 09 08 36 50.80 -4.35 100 69.538 2.793 9.770 9.575 1990 03 09 13 48 50.80 -4.35 100 60.534 2.012 9.647 10.368 1990 03 10 08 50 50.80 -4.35 100 67.379 2.551 9.496 10.423 1990 03 10 10 08 50.80 -4.35 100 59.299 1.940 9.249 11.382 1990 03 11 09 10 50.80 -4.35 100 64.640 2.300 7.989 11.428 1990 03 11 10 16 50.80 -4.35 100 58.300 1.886 8.065 12.378 1990 03 12 09 04 50.80 -4.35 100 64.886 2.321 8.604 12.445 1990 03 12 10 40 50.80 -4.35 100 56.262 1.787 8.301 12.447 1990 03 12 10 43 50.80 -4.35 100 56.117 1.780 8.382 12.516 1990 03 12 12 23 50.80 -4.35 100 54.504 1.711 8.408 12.518 1990 03 12 12 25 50.80 -4.35 100 54.568 1.713 8.489 12.580 1990 03 12 13 54 50.80 -4.35 100 60.096 1.986 8.570 12.581 1990 03 12 13 57 50.80 -4.35 100 60.302 1.998 8.596 13.346 1990 03 13 08 18 50.80 -4.35 100 70.337 2.896 8.355 13.348 1990 03 13 08 20 50.80 -4.35 100 70.102 2.865 8.328 13.421 1990 03 13 10 06 50.80 -4.35 100 58.313 1.887 8.161 13.500 1990 03 13 11 59 50.80 -4.35 100 53.742 1.680 8.408 13.571 1990 03 13 13 42 50.80 -4.35 100 58.683 1.907 8.556 14.362 1990 03 14 08 41 50.80 -4.35 100 67.006 2.513 9.053 14.364 1990 03 14 08 44 50.80 -4.35 100 66.608 2.474 9.080 14.433 1990 03 14 10 23 50.80 -4.35 100 56.561 1.801 9.026 14.481 1990 03 14 11 33 50.80 -4.35 100 53.480 1.670 8.879 14.568 1990 03 14 13 37 50.80 -4.35 100 57.883 1.865 8.755 15.338 1990 03 15 08 07 50.80 -4.35 100 71.206 3.017 8.435 15.340 1990 03 15 08 09 50.80 -4.35 100 70.842 2.965 8.382 15.383 1990 03 15 09 12 50.80 -4.35 100 62.918 2.169 8.462 15.385 1990 03 15 09 13 50.80 -4.35 100 62.738 2.156 8.408 15.449 1990 03 15 10 47 50.80 -4.35 100 54.714 1.720 8.516 15.451 1990 03 15 10 48 50.80 -4.35 100 54.622 1.716 8.516 15.504 1990 03 15 12 05 50.80 -4.35 100 53.008 1.652 8.489 15.505 1990 03 15 12 07 50.80 -4.35 100 53.039 1.653 8.516 15.566 1990 03 15 13 35 50.80 -4.35 100 57.362 1.839 8.462 15.568 1990 03 15 13 37 50.80 -4.35 100 57.568 1.849 8.462 16.363 1990 03 16 08 42 50.80 -4.35 100 66.060 2.423 8.167 16.365 1990 03 16 08 45 50.80 -4.35 100 65.734 2.394 8.113 16.446 1990 03 16 10 42 50.80 -4.35 100 54.555 1.713 8.167 16.448 1990 03 16 10 44 50.80 -4.35 100 54.432 1.708 8.220 16.504 1990 03 16 12 05 50.80 -4.35 100 52.616 1.638 8.247 16.506 1990 03 16 12 08 50.80 -4.35 100 52.664 1.639 8.274 16.593 1990 03 16 14 13 50.80 -4.35 100 60.601 2.016 8.435 16.595 1990 03 16 14 16 50.80 -4.35 100 60.911 2.035 8.408 17.342 1990 03 17 08 13 50.80 -4.35 100 69.642 2.806 8.328 17.343 1990 03 17 08 14 50.80 -4.35 100 69.437 2.781 8.301 17.410 1990 03 17 09 49 50.80 -4.35 100 58.197 1.881 8.408 17.411 1990 03 17 09 51 50.80 -4.35 100 58.042 1.873 8.408 18.333 1990 03 18 08 00 50.80 -4.35 100 71.080 2.999 8.382 18.335 1990 03 18 08 02 50.80 -4.35 100 70.804 2.960 8.382 18.411 1990 03 18 09 51 50.80 -4.35 100 57.617 1.852 8.167 18.412 1990 03 18 09 53 50.80 -4.35 100 57.426 1.842 8.113 19.368 1990 03 19 08 49 50.80 -4.35 100 64.114 2.258 8.065 19.455 1990 03 19 10 55 50.80 -4.35 100 52.695 1.640 8.065 19.504 1990 03 19 12 06 50.80 -4.35 100 51.458 1.596 8.089 19.571 1990 03 19 13 42 50.80 -4.35 100 56.537 1.800 8.384 20.359 1990 03 20 08 36 50.80 -4.35 100 65.357 2.361 9.921 20.404 1990 03 20 09 41 50.80 -4.35 100 57.809 1.861 9.547 20.506 1990 03 20 12 08 50.80 -4.35 100 51.098 1.584 9.695 20.539 1990 03 20 12 55 50.80 -4.35 100 52.810 1.645 9.647 21.384 1990 03 21 09 12 50.80 -4.35 100 60.539 2.012 8.827 21.415 1990 03 21 09 56 50.80 -4.35 100 55.972 1.774 8.704 21.512 1990 03 21 12 17 50.80 -4.35 100 50.881 1.577 8.604 21.573 1990 03 21 13 45 50.80 -4.35 100 56.177 1.783 8.556 22.365 1990 03 22 08 45 50.80 -4.35 100 63.516 2.212 8.704 22.420 1990 03 22 10 04 50.80 -4.35 100 54.912 1.728 8.656 23.352 1990 03 23 08 26 50.80 -4.35 100 65.544 2.377 8.382 23.353 1990 03 23 08 28 50.80 -4.35 100 65.356 2.360 8.382 23.390 1990 03 23 09 21 50.80 -4.35 100 58.824 1.914 8.212 23.489 1990 03 23 11 44 50.80 -4.35 100 49.782 1.541 8.137 23.567 1990 03 23 13 36 50.80 -4.35 100 54.631 1.716 8.040 24.340 1990 03 24 08 08 50.80 -4.35 100 67.616 2.575 8.089 24.367 1990 03 24 08 48 50.80 -4.35 100 62.356 2.129 7.842 26.326 1990 03 26 07 49 50.80 -4.35 100 69.637 2.805 9.897 26.388 1990 03 26 09 19 50.80 -4.35 100 57.853 1.863 9.349 26.439 1990 03 26 10 32 50.80 -4.35 100 51.179 1.587 9.126 26.499 1990 03 26 11 59 50.80 -4.35 100 48.640 1.507 9.349 26.542 1990 03 26 13 00 50.80 -4.35 100 50.917 1.578 9.101 27.336 1990 03 27 08 03 50.80 -4.35 100 67.309 2.543 9.472 27.400 1990 03 27 09 35 50.80 -4.35 100 55.691 1.761 9.349 27.401 1990 03 27 09 37 50.80 -4.35 100 55.523 1.754 9.241 27.457 1990 03 27 10 57 50.80 -4.35 100 49.369 1.529 9.349 27.487 1990 03 27 11 41 50.80 -4.35 100 48.219 1.495 9.547 27.525 1990 03 27 12 36 50.80 -4.35 100 49.239 1.525 9.647 28.331 1990 03 28 07 57 50.80 -4.35 100 67.843 2.599 9.225 28.425 1990 03 28 10 12 50.80 -4.35 100 51.892 1.611 9.107 28.426 1990 03 28 10 13 50.80 -4.35 100 51.816 1.609 9.053 28.477 1990 03 28 11 27 50.80 -4.35 100 48.008 1.488 8.852 28.544 1990 03 28 13 03 50.80 -4.35 100 50.376 1.560 9.101 29.331 1990 03 29 07 56 50.80 -4.35 100 67.606 2.574 9.972 29.451 1990 03 29 10 50 50.80 -4.35 100 48.941 1.516 9.572 29.497 1990 03 29 11 56 50.80 -4.35 100 47.451 1.473 9.644 29.499 1990 03 29 11 59 50.80 -4.35 100 47.478 1.474 9.617 29.541 1990 03 29 12 59 50.80 -4.35 100 49.756 1.541 9.537 29.543 1990 03 29 13 01 50.80 -4.35 100 49.924 1.546 9.510 30.342 1990 03 30 08 12 50.80 -4.35 100 64.928 2.324 8.827 30.400 1990 03 30 09 36 50.80 -4.35 100 54.439 1.708 8.892 30.402 1990 03 30 09 38 50.80 -4.35 100 54.248 1.700 8.811 30.466 1990 03 30 11 11 50.80 -4.35 100 47.640 1.478 8.758 30.468 1990 03 30 11 13 50.80 -4.35 100 47.566 1.476 8.865 30.501 1990 03 30 12 01 50.80 -4.35 100 47.122 1.464 8.784 30.503 1990 03 30 12 03 50.80 -4.35 100 47.153 1.465 8.811 30.541 1990 03 30 12 59 50.80 -4.35 100 49.381 1.529 8.784 30.543 1990 03 30 13 01 50.80 -4.35 100 49.533 1.534 8.811 31.332 1990 03 31 07 57 50.80 -4.35 100 66.632 2.477 8.596 31.339 1990 03 31 08 08 50.80 -4.35 100 65.076 2.337 8.838 31.384 1990 03 31 09 12 50.80 -4.35 100 56.706 1.808 8.462 31.386 1990 03 31 09 15 50.80 -4.35 100 56.357 1.791 8.462