condition	mean	min	max
4 h after light	4.17063	4.15198	4.20361
8 h after light	4.278466666666667	4.21889	4.36907
12 h after light	4.25925	4.22878	4.3069
4 h after dark	4.27751	4.21207	4.36578
8 h after dark	4.276716666666667	4.20894	4.34037
12 h after dark	4.303213333333333	4.2593	4.35848