condition	mean	min	max
4 h after light	16.84035	15.2926	18.3881
8 h after light	20.913899999999998	20.2988	21.529
12 h after light	19.91065	18.6159	21.2054
4 h after dark	24.57425	23.5007	25.6478
8 h after dark	20.80235	20.0912	21.5135
12 h after dark	20.2973	19.5507	21.0439