condition	mean	min	max
4 h after light	17.754085	16.563919	18.944251
8 h after light	18.346127000000003	18.112676	18.579578
12 h after light	20.172093500000003	18.112676	22.231511
4 h after dark	18.376222	18.112676	18.639768
8 h after dark	17.148132500000003	17.010712	17.285553
12 h after dark	18.112676	18.112676	18.112676