condition	mean	min	max
4 h after light	17.93155	16.6638	19.1993
8 h after light	12.36345	11.917	12.8099
12 h after light	13.1548	12.3232	13.9864
4 h after dark	15.814466666666666	15.7245	15.9925
8 h after dark	18.2419	16.8691	19.7119
12 h after dark	17.1593	16.5059	18.2132