condition	mean	min	max
4 h after light	19.0115	14.8642	23.305
8 h after light	9.382386666666667	2.06536	15.9178
12 h after light	9.79587	4.71982	14.9687
4 h after dark	17.0072	11.7758	20.4886
8 h after dark	17.5306	11.3703	21.325
12 h after dark	26.600066666666667	24.0895	31.4144