condition	mean	min	max
4 h after light	18.76305	13.8062	23.7199
8 h after light	13.28215	11.2357	15.3286
12 h after light	18.9153	15.1792	22.6514
4 h after dark	23.892049999999998	22.9968	24.7873
8 h after dark	43.33855	41.0784	45.5987
12 h after dark	37.8692	34.7194	41.019