condition	mean	min	max
4 h after light	17.75205	17.7288	17.7753
8 h after light	14.24295	13.785	14.7009
12 h after light	14.54415	13.7187	15.3696
4 h after dark	12.2457	11.5153	12.9761
8 h after dark	14.25965	13.9916	14.5277
12 h after dark	17.21085	17.1394	17.2823