condition	mean	min	max
4 h after light	6.45379	4.78825	8.11933
8 h after light	12.31765	11.1706	13.4647
12 h after light	16.36945	15.3821	17.3568
4 h after dark	14.9064	14.0459	15.7669
8 h after dark	11.7829	11.7804	11.7854
12 h after dark	8.818555	8.17094	9.46617