condition	mean	min	max
4 h after light	15.881712	15.678091	16.085333
8 h after light	14.461873	13.96757	14.956176
12 h after light	16.44071	15.632032	17.249388
4 h after dark	11.7803795	9.763298	13.797461
8 h after dark	12.560662	10.437364	14.68396
12 h after dark	16.748533	16.748533	16.748533