condition	mean	min	max
4 h after light	17.9165	16.9299	18.9031
8 h after light	23.51765	21.7078	25.3275
12 h after light	22.4724	21.1002	23.8446
4 h after dark	38.666	35.5357	41.7963
8 h after dark	39.911500000000004	38.4425	41.3805
12 h after dark	30.104	28.9811	31.2269