condition mean min max 4 h after light 0.96221 0.0 1.92442 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 1.393505 0.0 2.78701