condition mean min max 4 h after light 1.5367549999999999 1.35172 1.72179 8 h after light 1.7274500000000002 1.55614 1.89876 12 h after light 3.289305 3.23395 3.34466 4 h after dark 2.53232 1.78442 3.11632 8 h after dark 2.4453933333333335 2.27218 2.59705 12 h after dark 1.3603366666666667 1.04259 1.64545