condition	mean	min	max
4 h after light	15.618060499999999	15.002123	16.233998
8 h after light	17.140594	15.664218	18.61697
12 h after light	19.0363835	16.427603	21.645164
4 h after dark	17.8810075	15.357522	20.404493
8 h after dark	16.5796695	13.679553	19.479786
12 h after dark	17.844319	17.844319	17.844319