condition	mean	min	max
4 h after light	8.0139605	7.61032	8.417601
8 h after light	8.1410165	8.046388	8.235645
12 h after light	7.5853735	7.457029	7.713718
4 h after dark	7.889419	7.528661	8.250177
8 h after dark	8.4498525	8.250177	8.649528
12 h after dark	9.423328	9.423328	9.423328