condition mean min max 4 h after light 6247.236 6107.404 6451.161 8 h after light 3134.3703333333333 2276.489 4348.885 12 h after light 3430.249 2668.5679999999998 4271.056 16 h after light 4444.612999999999 3866.805 5381.842 4 h after dark 7196.510666666667 7137.944 7240.1230000000005 8 h after dark 5435.343 4340.116 6564.053000000001