condition	mean	min	max
4 h after light	20.3921	17.6298	23.1544
8 h after light	11.3657	11.2211	11.5103
12 h after light	12.8475	12.3262	13.3688
4 h after dark	16.443266666666666	15.2539	17.5925
8 h after dark	24.9279	24.3348	25.6645
12 h after dark	18.920466666666666	18.425	19.7556