condition	mean	min	max
0 h after light	17.4248	15.3655	19.4841
4 h after light	24.6441	23.9456	25.3426
8 h after light	15.87915	15.7245	16.0338
4 h after dark	23.7104	19.509	27.9118
8 h after dark	26.05305	24.7378	27.3683
12 h after dark	18.3875	17.561	19.214