condition	mean	min	max
4 h after light	1.97742	1.94556	2.00928
8 h after light	4.26157	4.08549	4.43765
12 h after light	4.879275	4.69031	5.06824
4 h after dark	7.398205	6.9325	7.86391
8 h after dark	4.46275	4.38826	4.53724
12 h after dark	3.437075	2.88015	3.994