condition	mean	min	max
4 h after light	20.8408885	20.35556	21.326217
8 h after light	17.55445	16.74427	18.36463
12 h after light	20.4535545	19.580892	21.326217
4 h after dark	26.1729515	22.493997	29.851906
8 h after dark	19.7356565	18.520485	20.950828
12 h after dark	25.906019	25.906019	25.906019