condition	mean	min	max
4 h after light	15.16247	8.68074	21.6442
8 h after light	12.6832	12.0826	13.2838
12 h after light	8.636565	7.04793	10.2252
4 h after dark	3.5850400000000002	3.31993	3.85015
8 h after dark	4.1270050000000005	3.47295	4.78106
12 h after dark	5.488065	5.27762	5.69851