(LU UVB Index: effects of sun angle & ozone, thus potential UVB if no clouds) Lacawac UV summary for: April 2000 (T_array is optical sensor Temp.) Snow on sensor 4/9 reduced measured irradiance during AM. MAX MAX SUM SUM MAX MAX 305 nm 340 nm 305 nm 340 nm LU_UVB_Index T_array DAY W/m2/nm W/m2/nm KJ/m2/nm KJ/m2/nm (305/340*1000) C 1 0.02316 0.434 0.4055 10.87 54 22.0 2 0.02082 0.339 0.1943 4.13 62 20.5 3 0.02637 0.376 0.3760 7.10 71 24.7 4 0.01521 0.345 0.1660 4.32 61 16.4 5 0.01318 0.354 0.2095 7.34 44 5.9 6 0.02559 0.450 0.3576 8.52 57 22.9 7 0.01731 0.374 0.2590 6.72 58 15.7 8 0.03057 0.462 0.5218 10.18 67 26.5 9 0.01430 0.402 0.1784 7.22 37 7.3 10 0.02295 0.506 0.3749 11.07 46 11.3 11 0.00956 0.257 0.1311 4.15 48 5.9 12 0.02627 0.508 0.3565 9.16 54 7.9 13 0.02746 0.485 0.4937 12.54 57 14.6 14 0.02860 0.476 0.5129 12.17 60 20.3 15 0.02787 0.479 0.3794 8.35 66 24.0 16 0.03147 0.484 0.4503 9.97 67 27.6 17 0.00436 0.107 0.0406 1.54 41 7.6 18 0.00812 0.160 0.1089 3.41 51 5.3 19 0.02304 0.389 0.3675 8.12 64 17.6 20 0.02999 0.451 0.3455 7.38 73 22.0 21 0.00511 0.120 0.0424 1.70 43 8.0 22 0.01982 0.365 0.1772 4.53 55 12.0 23 0.01264 0.264 0.1265 3.75 49 6.9 24 0.03068 0.510 0.5714 13.67 60 20.0 25 0.03229 0.502 0.5676 11.89 67 18.9 26 0.03133 0.501 0.4832 10.28 69 14.8 27 0.01633 0.340 0.2382 5.46 64 13.3 28 0.03422 0.530 0.4599 9.52 67 16.8 29 0.03247 0.530 0.5406 12.42 63 21.8 30 0.02918 0.520 0.5434 14.08 56 17.1 MONTHLY SUMMARY: DAYS MAX MAX SUM SUM MAX MAX 30 0.03422 0.530 9.9800 241.55 73 27.6