condition mean min max 4 h after light 1.182555 0.80648 1.55863 8 h after light 2.046985 1.75078 2.34319 12 h after light 0.9711865 0.913963 1.02841 4 h after dark 1.70054 1.20137 2.27014 8 h after dark 1.99865 1.42334 2.49403 12 h after dark 1.92418 1.54271 2.26046