condition	mean	min	max
4 h after light	9.17688	9.12068	9.26021
8 h after light	9.19668	8.99044	9.433010000000001
12 h after light	9.041493333333333	8.72043	9.26195
4 h after dark	8.808646666666666	8.46383	9.320739999999999
8 h after dark	8.915153333333333	8.72682	9.16972
12 h after dark	8.64615	8.37647	8.785910000000001