condition mean min max 4 h after light 12.67248 9.77426 15.5707 8 h after light 12.99825 12.9313 13.0652 12 h after light 13.151455 9.63571 16.6672 4 h after dark 11.4172 10.768 11.7633 8 h after dark 14.5323 14.4872 14.5757 12 h after dark 14.017066666666667 12.9964 14.7542