condition mean min max 0 h after light 5.684665 3.95709 7.41224 2 h after light 4.050965 3.82068 4.28125 4 h after light 5.44076 4.98566 5.89586 8 h after light 4.73102 4.49528 4.96676 12 h after light 7.6945 7.67883 7.71017 2 h after dark 8.46598 7.98481 8.94715 4 h after dark 7.327725 6.99802 7.65743 8 h after dark 7.42519 7.21031 7.64007 12 h after dark 5.738775 4.81534 6.66221