condition mean min max 4 h after light 2.769735 2.49921 3.04026 8 h after light 2.26582 2.17464 2.357 12 h after light 2.540365 2.46354 2.61719 4 h after dark 3.49213 3.08828 3.99702 8 h after dark 3.1341300000000003 3.11166 3.16096 12 h after dark 2.779666666666667 2.39035 3.44916