condition	mean	min	max
4 h after light	9.001669999999999	8.80227	9.323319999999999
8 h after light	8.705456666666667	8.517539999999999	8.8509
12 h after light	9.00093	8.69711	9.43287
4 h after dark	8.777686666666666	8.37451	9.11103
8 h after dark	8.65082	8.35369	9.0233
12 h after dark	9.229026666666666	8.96983	9.602260000000001