condition	mean	min	max
4 h after light	18.93165	16.3381	21.5252
8 h after light	18.2382	17.8689	18.6075
12 h after light	22.07235	21.552	22.5927
4 h after dark	26.4815	25.4305	27.1724
8 h after dark	28.7558	28.2425	29.4522
12 h after dark	21.7389	21.7145	21.7523