condition	mean	min	max
4 h after light	16.9418375	15.256345	18.62733
8 h after light	21.603452500000003	18.160357	25.046548
12 h after light	22.316218499999998	18.485193	26.147244
4 h after dark	40.29669	29.37725	51.21613
8 h after dark	38.4094225	29.31368	47.505165
12 h after dark	18.071728	18.071728	18.071728