condition	mean	min	max
4 h after light	21.40735	19.3723	23.4424
8 h after light	12.2867	11.2047	13.3687
12 h after light	13.251000000000001	12.9242	13.5778
4 h after dark	9.76274	9.58183	9.94365
8 h after dark	23.67625	21.9021	25.4504
12 h after dark	15.48125	15.4373	15.5252