condition	mean	min	max
4 h after light	14.89495	14.2104	15.5795
8 h after light	8.982125	8.93639	9.02786
12 h after light	7.711195	7.41965	8.00274
4 h after dark	8.67947	8.20292	9.63095
8 h after dark	11.138056666666667	9.77077	12.4819
12 h after dark	12.417366666666666	11.8766	12.9346