condition	mean	min	max
4 h after light	20.46785	19.6935	21.2422
8 h after light	14.87925	14.8061	14.9524
12 h after light	12.53555	12.1584	12.9127
4 h after dark	9.975675	9.71535	10.236
8 h after dark	12.20465	11.6421	12.7672
12 h after dark	17.14855	16.5967	17.7004