condition mean min max 0 h after light 1.932 1.93028 1.93372 4 h after light 0.951575 0.0 1.90315 8 h after light 1.937305 1.90971 1.9649 4 h after dark 1.90327 0.0 3.80654 8 h after dark 4.79276 0.0 9.58552 12 h after dark 1.885695 0.0 3.77139