condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.20518033333333333 0.0 0.615541 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0