condition	mean	min	max
4 h after light	19.54675	18.4163	20.6772
8 h after light	13.80245	13.1045	14.5004
12 h after light	11.53105	11.4992	11.5629
4 h after dark	21.209633333333333	20.1182	21.9428
8 h after dark	22.3503	20.7243	23.7779
12 h after dark	16.622366666666665	14.5611	18.0433