condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.086051 0.0 0.258153 9 h after light 0.0 0.0 0.0 12 h after light 0.0958945 0.0 0.254718 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