condition	mean	min	max
4 h after light	27.03855	25.9001	28.177
8 h after light	18.47305	18.4282	18.5179
12 h after light	24.84115	24.3736	25.3087
4 h after dark	47.6912	45.2649	50.9388
8 h after dark	52.7745	52.0878	53.9189
12 h after dark	48.81496666666667	43.7707	52.4363