condition mean min max 4 h after light 1.1656849999999999 1.03169 1.29968 8 h after light 0.9141195 0.684989 1.14325 12 h after light 3.371345 3.23347 3.50922 4 h after dark 4.47314 3.51867 5.42761 8 h after dark 3.175605 2.48859 3.86262 12 h after dark 2.255585 2.13446 2.37671