condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.092553 0.0 0.277659 3 h after dark 0.172727 0.0 0.285226 6 h after dark 0.15391666666666667 0.0 0.243497 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0