condition mean min max 0 h after light 10.729735 9.48847 11.971 4 h after light 11.4814 10.7652 12.1976 8 h after light 14.77595 14.1944 15.3575 4 h after dark 16.11765 15.3731 16.8622 8 h after dark 15.8691 15.025 16.7132 12 h after dark 10.85085 10.6664 11.0353