condition	mean	min	max
4 h after light	19.776211000000004	18.172485	21.379937
8 h after light	17.2152375	16.75429	17.676185
12 h after light	19.804988	19.605945	20.004031
4 h after dark	18.2685125	16.827982	19.709043
8 h after dark	17.2819815	16.887778	17.676185
12 h after dark	20.884886	20.884886	20.884886