Tutorial - University of Hong Kong

128.7 128.4 125.9 123 118 110.6 102.2 92.7 79.1 Mid zone angle, measured from the downward vertical, degree 95 105 115 125 135 145 155 165 175 Intensity, cd/klm 72.4 73.2 61.7 44.9 27.9 13.3 2.7 0.94 0.94 ................
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