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 0.29739566666666667 0.0 0.515196 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0