condition	mean	min	max
0 h after light	20.9928	18.6831	23.3025
4 h after light	20.89605	20.7383	21.0538
8 h after light	13.8763	11.8392	15.9134
4 h after dark	14.8583	12.8809	16.8357
8 h after dark	21.22345	19.4158	23.0311
12 h after dark	22.5083	21.3763	23.6403