condition mean min max 0 h after light 2.170735 2.02795 2.31352 4 h after light 1.6491 1.23555 2.06265 8 h after light 1.36741 1.17751 1.55731 4 h after dark 1.51722 1.23563 1.79881 8 h after dark 1.62076 1.61396 1.62756 12 h after dark 1.23785 1.22422 1.25148