Transmissivity 



N 



T 

 N X lO" 10 

 N X 10" 9 

 N X lO" 8 

 N X lO" 7 

 N X lO" 8 



N X 10" B 

 N X lO" 4 

 N X lO" 3 

 N X lO" 2 

 N X 10- x 



Table 160 (continued) 

 HORIZONTAL VISIBILITY 



Table 160-A2. — Extinction coefficient as a function of transmissivity 

 a = - loge T = — loge 10 p 

 12345678 



459 



Transmissivity 



T 



0.0 



0.1 



0.2 



0.3 



0.4 



0.5 

 0.6 

 0.7 

 0.8 

 0.9 



1.0 



.00 



km.- 1 

 + 00 

 2.3026 

 1.6094 

 1.2040 

 0.9163 



0.6931 

 0.5108 

 0.3567 

 0.2231 

 0.1054 



0.0000 



.01 



km.- 1 



4.6052 

 2.2073 

 1.5606 

 1.1712 

 0.8916 



0.6733 

 0.4943 

 0.3425 

 0.2107 

 0.0943 



.02 



km.- 1 



3.9120 

 2.1203 

 1.5141 

 1.1394 

 0.8675 



0.6539 

 0.4780 

 0.3285 

 0.1985 

 0.0834 



.03 



km.- 1 



3.5066 

 2.0402 

 1.4697 

 1.1087 

 0.8440 



0.6349 

 0.4620 

 0.3147 

 0.1863 

 0.0726 



.04 



km.- 1 



3.2189 

 1.9661 

 1.4271 

 1.0788 

 0.8210 



0.6162 

 0.4463 

 0.3011 

 0.1744 

 0.0619 



.05 



km.- 1 



2.9957 

 1.8971 

 1.3863 

 1.0498 

 0.7985 



0.5978 

 0.4308 

 0.2877 

 0.1625 

 0.0513 



.06 



km.- 1 



2.8134 

 1.8326 

 1.3471 

 1.0217 

 0.7765 



0.5798 

 0.4155 

 0.2744 

 0.1508 

 0.0408 



.07 



km.- 1 



2.6593 

 1.7720 

 1.3093 

 0.9943 

 0.7550 



0.5621 

 0.4005 

 0.2614 

 0.1393 

 0.0305 



km.- 1 



2.5257 

 1.7148 

 1.2730 

 0.9676 

 0.7340 



0.5447 

 0.3857 

 0.2485 

 0.1278 

 0.0202 



.09 



km.- 1 



2.4079 

 1.6607 

 1.2379 

 0.9416 

 0.7133 



0.5276 

 0.3711 

 0.2357 

 0.1165 

 0.0101 



km. 



10 



km.- 1 



20 



km. 



30 



40 



km. -1 km.- 1 



50 



km. 



60 



km.- 1 



70 



km. 



90 



km. -1 km. -1 



-400 921.034 944.060 967.086 990.112 



-300 690.776 713.801 736.827 759.853 782.879 805.905 828.931 851.956 874.982 898.008 



-200 460.517 483.543 506.569 529.595 552.620 575.646 598.672 621.698 644.724 667.750 



-100 230.259 253.284 276.310 299.336 322.362 345.388 368.414 391.439 414.465 437.491 



■100 



- 90 



■ 80 



- 70 



■ 60 



- 50 



- 40 



- 30 



- 20 



■ 10 



1 



km. -1 km. -1 



2 



km. - 



230.259 

 207.233 

 184.207 

 161.181 

 138.155 



232.561 234.864 



209.535 211.838 



186.509 188.812 



163.484 165.786 



140.458 142.760 



3 



km.- 1 



237.166 

 214.140 

 191.115 

 168.089 

 145.063 



4 



km.- 1 



239.469 

 216.443 

 193.417 

 170.391 

 147.365 



5 



km.- 1 



241.771 

 218.746 

 195.720 

 172.694 

 149.668 



6 



km.- 1 



244.074 

 221.048 

 198.022 

 174.996 

 151.971 



7 



km.- 1 



246.3/7 

 223.351 

 200.325 

 177.299 

 154.273 



km.- 1 



248.679 

 225.653 

 202.627 

 179.602 

 156.576 



9 



km.- 1 



250.982 

 227.956 

 204.930 

 181.904 

 158.878 



115.129 117.432 119.734 122.037 124.340 126.642 128.945 131.247 133.550 135.853 



92.103 94.406 96.709 99.011 101.314 103.616 105.919 108.221 110.524 112.827 



69.078 71.380 73.683 75.985 78.288 80.590 82.893 85.196 87.498 89.801 



46.052 48.354 50.657 52.959 55.262 57.565 59.867 62.170 64.472 66.775 



23.026 25.328 27.631 29.934 32.236 34.539 36.841 39.144 41.447 43.749 



0.000 2.303 4.605 



6.908 9.210 11.513 13.816 16.118 18.421 20.723 

 (continued) 



SMITHSONIAN METEOROLOGICAL TABLES 



