condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.187392 0.0 0.374784 8 h after light 0.0 0.0 0.0 4 h after dark 0.120416 0.0 0.240832 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0