condition mean min max 4 h after light 3.431485 3.04234 3.82063 8 h after light 1.9919099999999998 1.63685 2.34697 12 h after light 1.634035 1.55225 1.71582 4 h after dark 1.097975 1.00728 1.18867 8 h after dark 2.369675 2.24638 2.49297 12 h after dark 2.6595649999999997 2.53546 2.78367