De Backer H. DOBSON UCCLE TOTALCOL 01-OCT-1973 00:00:0031-OCT-1973 23:59:590001 30 1010 Hugo De Backer Uccle; Royal Meteorological Institute Belgium Dobson Spectrophotometer Instrument No.40 NDSC 1 1 1973 10 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 1.432 1973 10 01 10 21 50.80 -4.35 100 56.098 1.780 9.075 1.529 1973 10 01 12 42 50.80 -4.35 100 56.094 1.779 8.852 2.425 1973 10 02 10 11 50.80 -4.35 100 57.075 1.825 8.784 2.426 1973 10 02 10 13 50.80 -4.35 100 56.927 1.818 8.408 2.461 1973 10 02 11 04 50.80 -4.35 100 54.739 1.721 8.570 2.463 1973 10 02 11 06 50.80 -4.35 100 54.677 1.718 8.355 2.542 1973 10 02 13 01 50.80 -4.35 100 57.690 1.855 8.435 2.545 1973 10 02 13 04 50.80 -4.35 100 57.955 1.869 8.355 3.451 1973 10 03 10 48 50.80 -4.35 100 55.561 1.756 7.764 3.455 1973 10 03 10 55 50.80 -4.35 100 55.349 1.746 7.549 4.440 1973 10 04 10 33 50.80 -4.35 100 56.565 1.801 7.414 4.442 1973 10 04 10 36 50.80 -4.35 100 56.442 1.795 7.173 4.537 1973 10 04 12 53 50.80 -4.35 100 57.975 1.870 7.226 4.540 1973 10 04 12 57 50.80 -4.35 100 58.209 1.882 7.092 4.573 1973 10 04 13 44 50.80 -4.35 100 62.184 2.117 7.108 5.433 1973 10 05 10 24 50.80 -4.35 100 57.397 1.841 7.576 5.436 1973 10 05 10 27 50.80 -4.35 100 57.205 1.831 7.414 5.523 1973 10 05 12 33 50.80 -4.35 100 57.180 1.830 7.737 5.525 1973 10 05 12 36 50.80 -4.35 100 57.339 1.838 7.576 5.583 1973 10 05 13 59 50.80 -4.35 100 64.063 2.254 7.414 5.585 1973 10 05 14 02 50.80 -4.35 100 64.419 2.282 7.656 8.424 1973 10 08 10 10 50.80 -4.35 100 59.225 1.936 8.212 8.525 1973 10 08 12 36 50.80 -4.35 100 58.500 1.897 8.236 9.405 1973 10 09 09 43 50.80 -4.35 100 61.537 2.074 7.817 9.452 1973 10 09 10 50 50.80 -4.35 100 57.730 1.857 7.769 9.535 1973 10 09 12 50 50.80 -4.35 100 59.715 1.963 7.745 9.591 1973 10 09 14 11 50.80 -4.35 100 66.865 2.499 7.941 11.442 1973 10 11 10 36 50.80 -4.35 100 58.966 1.922 7.941 11.509 1973 10 11 12 13 50.80 -4.35 100 58.650 1.905 7.842 11.577 1973 10 11 13 50 50.80 -4.35 100 65.409 2.365 7.893 12.436 1973 10 12 10 28 50.80 -4.35 100 59.704 1.963 8.516 12.438 1973 10 12 10 31 50.80 -4.35 100 59.550 1.954 8.435 12.501 1973 10 12 12 02 50.80 -4.35 100 58.681 1.906 8.137 12.580 1973 10 12 13 54 50.80 -4.35 100 66.181 2.434 8.333 15.453 1973 10 15 10 52 50.80 -4.35 100 59.856 1.972 8.408 16.447 1973 10 16 10 44 50.80 -4.35 100 60.479 2.008 9.647 17.428 1973 10 17 10 17 50.80 -4.35 100 62.018 2.106 9.397 17.522 1973 10 17 12 31 50.80 -4.35 100 61.646 2.082 8.604 19.417 1973 10 19 10 01 50.80 -4.35 100 63.631 2.221 7.893 19.444 1973 10 19 10 40 50.80 -4.35 100 61.681 2.084 8.161 22.412 1973 10 22 09 53 50.80 -4.35 100 65.157 2.343 7.353 22.506 1973 10 22 12 09 50.80 -4.35 100 62.581 2.145 7.476 23.435 1973 10 23 10 26 50.80 -4.35 100 63.614 2.220 7.817 23.537 1973 10 23 12 53 50.80 -4.35 100 65.055 2.335 7.989 24.425 1973 10 24 10 12 50.80 -4.35 100 64.664 2.302 8.005 24.519 1973 10 24 12 28 50.80 -4.35 100 64.012 2.250 8.005 24.521 1973 10 24 12 30 50.80 -4.35 100 64.136 2.260 7.629 25.442 1973 10 25 10 37 50.80 -4.35 100 63.853 2.238 7.468 25.445 1973 10 25 10 41 50.80 -4.35 100 63.711 2.227 7.280 25.533 1973 10 25 12 47 50.80 -4.35 100 65.357 2.361 7.361 25.536 1973 10 25 12 51 50.80 -4.35 100 65.617 2.383 7.226 26.444 1973 10 26 10 40 50.80 -4.35 100 64.081 2.256 7.388 26.447 1973 10 26 10 44 50.80 -4.35 100 63.950 2.245 7.146 26.542 1973 10 26 13 00 50.80 -4.35 100 66.512 2.465 7.092 26.545 1973 10 26 13 04 50.80 -4.35 100 66.797 2.493 6.877 29.421 1973 10 29 10 06 50.80 -4.35 100 66.606 2.474 8.013 29.577 1973 10 29 13 51 50.80 -4.35 100 71.693 3.089 7.745