condition	mean	min	max
4 h after light	17.442549999999997	16.9438	17.9413
8 h after light	19.64025	19.2951	19.9854
12 h after light	17.8845	17.7732	17.9958
4 h after dark	31.4886	29.7849	33.1923
8 h after dark	28.71205	27.9994	29.4247
12 h after dark	25.762549999999997	25.467	26.0581