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 2.06967 2.05482 2.08452 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0