condition	mean	min	max
4 h after light	5.029013333333333	4.86316	5.27345
8 h after light	4.98596	4.87406	5.11146
12 h after light	5.04364	4.82854	5.25106
4 h after dark	5.018	4.86142	5.2631
8 h after dark	5.011206666666666	4.58528	5.519
12 h after dark	4.91985	4.89372	4.94468