condition mean min max 4 h after light 0.039747 0.0 0.079494 8 h after light 0.03220295 0.0 0.0644059 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0