condition	mean	min	max
4 h after light	9.039909999999999	8.27615	9.80367
8 h after light	8.983519999999999	8.77437	9.19267
12 h after light	15.924949999999999	15.8584	15.9915
4 h after dark	17.96495	16.7625	19.1674
8 h after dark	16.18805	15.5483	16.8278
12 h after dark	14.87085	14.2731	15.4686