condition mean min max 4 h after light 3.7568200000000003 3.31976 4.19388 8 h after light 4.658435 4.55075 4.76612 12 h after light 6.938795000000001 6.37051 7.50708 4 h after dark 8.960015 8.13884 9.78119 8 h after dark 6.6475349999999995 6.33127 6.9638 12 h after dark 5.944735 5.82352 6.06595