Number of Cloud Observations March, April, May (1954 - 1997) Grid Box Averages 404 boxes Box # Lat.N Lon.E Number 1 85.0 -150.0 2205 2 85.0 -30.0 11637 3 85.0 90.0 1779 4 75.0 -190.0 151282 5 75.0 -150.0 6244 6 75.0 -110.0 509 7 75.0 -70.0 1124 8 75.0 -30.0 5319 9 75.0 10.0 1690 10 75.0 50.0 186 11 75.0 90.0 843 12 75.0 130.0 9194 13 65.0 -200.0 246792 14 65.0 -180.0 10145 15 65.0 -160.0 3839 16 65.0 -140.0 198 20 65.0 -60.0 648 21 65.0 -40.0 24302 22 65.0 -20.0 7966 23 65.0 0.0 2051 24 65.0 20.0 0 25 65.0 40.0 0 26 65.0 60.0 152 27 65.0 80.0 522 28 65.0 100.0 61316 29 65.0 120.0 145455 30 65.0 140.0 153973 31 55.0 -200.0 478083 32 55.0 -180.0 14047 37 55.0 -80.0 417 38 55.0 -60.0 103023 39 55.0 -40.0 110568 40 55.0 -20.0 141284 41 55.0 0.0 144656 42 55.0 20.0 65091 44 55.0 60.0 162 45 55.0 80.0 456 46 55.0 100.0 50664 47 55.0 120.0 112815 48 55.0 140.0 247372 49 45.0 -205.0 64446 50 45.0 -195.0 35074 51 45.0 -185.0 6992 52 45.0 -175.0 9793 53 45.0 -165.0 2067 54 45.0 -155.0 2155 61 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206051 120 35.0 145.0 169471 124 25.0 -175.0 47386 125 25.0 -165.0 2617 126 25.0 -155.0 39949 127 25.0 -145.0 19449 128 25.0 -135.0 675 129 25.0 -125.0 1045 130 25.0 -115.0 557 131 25.0 -105.0 850 132 25.0 -95.0 38633 133 25.0 -85.0 147313 134 25.0 -75.0 112869 135 25.0 -65.0 46122 136 25.0 -55.0 26128 137 25.0 -45.0 33166 138 25.0 -35.0 38062 139 25.0 -25.0 43218 140 25.0 -15.0 40347 141 25.0 -5.0 51129 142 25.0 5.0 45787 143 25.0 15.0 28960 144 25.0 25.0 22713 145 25.0 35.0 63144 146 25.0 45.0 24351 147 25.0 55.0 58313 148 25.0 65.0 200744 149 25.0 75.0 182062 150 25.0 85.0 128829 151 25.0 95.0 96854 152 25.0 105.0 64839 153 25.0 115.0 28401 154 25.0 125.0 26859 155 25.0 135.0 149808 156 25.0 145.0 180 160 15.0 -175.0 9635 161 15.0 -165.0 64263 162 15.0 -155.0 70431 163 15.0 -145.0 32465 164 15.0 -135.0 22906 165 15.0 -125.0 18097 166 15.0 -115.0 6472 167 15.0 -105.0 43565 168 15.0 -95.0 188093 169 15.0 -85.0 63700 170 15.0 -75.0 42439 171 15.0 -65.0 57326 172 15.0 -55.0 15190 173 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