condition	mean	min	max
4 h after light	21.183847999999998	19.647154	22.720542
8 h after light	17.961796	17.449083	18.474509
12 h after light	19.6426735	16.765423	22.519924
4 h after dark	20.070432	19.873434	20.26743
8 h after dark	16.898016	16.577619	17.218413
12 h after dark	20.439063	20.439063	20.439063