condition	mean	min	max
0 h after light	14.17835	12.5662	15.7905
4 h after light	19.91405	19.0215	20.8066
8 h after light	20.975	17.2756	24.6744
4 h after dark	27.69775	25.9008	29.4947
8 h after dark	21.5974	20.7393	22.4555
12 h after dark	15.0385	14.0745	16.0025