condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.044566 0.0 0.133698 9 h after light 0.024712733333333334 0.0 0.0741382 12 h after light 0.0118971 0.0 0.0356913 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0