condition	mean	min	max
4 h after light	22.04045	21.3073	22.7736
8 h after light	16.09765	15.4184	16.7769
12 h after light	19.72635	18.8502	20.6025
4 h after dark	22.3628	21.6254	23.1002
8 h after dark	30.1862	29.3722	31.0002
12 h after dark	30.6381	29.7752	31.501