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 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.023040066666666668 0.0 0.0691202 9 h after dark 0.0210591 0.0 0.0631773 12 h after dark 0.0 0.0 0.0