De Backer H. DOBSON UCCLE TOTALCOL 01-NOV-1973 00:00:0030-NOV-1973 23:59:590001 30 1010 Hugo De Backer Uccle; Royal Meteorological Institute Belgium Dobson Spectrophotometer Instrument No.40 NDSC 1 1 1973 11 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 13.573 1973 11 13 13 44 50.80 -4.35 100 75.176 3.732 8.113 14.440 1973 11 14 10 33 50.80 -4.35 100 70.049 2.858 7.917 16.451 1973 11 16 10 49 50.80 -4.35 100 70.065 2.860 8.779 16.512 1973 11 16 12 17 50.80 -4.35 100 70.443 2.910 8.457 19.440 1973 11 19 10 34 50.80 -4.35 100 71.277 3.027 8.089 20.449 1973 11 20 10 46 50.80 -4.35 100 71.108 3.003 6.474 20.452 1973 11 20 10 50 50.80 -4.35 100 71.007 2.988 6.528 20.539 1973 11 20 12 56 50.80 -4.35 100 73.128 3.325 7.011 21.425 1973 11 21 10 12 50.80 -4.35 100 72.688 3.249 6.420 21.427 1973 11 21 10 14 50.80 -4.35 100 72.563 3.228 6.152 21.536 1973 11 21 12 52 50.80 -4.35 100 73.113 3.322 6.340 21.538 1973 11 21 12 55 50.80 -4.35 100 73.272 3.351 6.098 22.426 1973 11 22 10 14 50.80 -4.35 100 72.830 3.273 6.694 22.538 1973 11 22 12 55 50.80 -4.35 100 73.477 3.388 6.646 28.432 1973 11 28 10 22 50.80 -4.35 100 73.684 3.426 8.433 28.531 1973 11 28 12 45 50.80 -4.35 100 73.986 3.484 8.457