condition	mean	min	max
4 h after light	12.34225	10.8178	13.8667
8 h after light	17.878149999999998	16.9649	18.7914
12 h after light	12.07235	11.3475	12.7972
4 h after dark	23.4585	20.8565	26.0605
8 h after dark	19.2926	19.2674	19.3178
12 h after dark	17.5559	17.4802	17.6316