condition mean min max 4 h after light 13.561079 12.511645 14.610513 8 h after light 12.1202145 11.728784 12.511645 12 h after light 13.2377815 12.989329 13.486234 4 h after dark 12.754268 12.11496 13.393576 8 h after dark 15.5167775 15.181999 15.851556 12 h after dark 11.163648 11.163648 11.163648