condition	mean	min	max
4 h after light	9.069773	8.694586	9.44496
8 h after light	8.1072805	8.025997	8.188564
12 h after light	7.9529565	7.94941	7.956503
4 h after dark	9.1323965	9.046865	9.217928
8 h after dark	7.9808235	7.706591	8.255056
12 h after dark	8.446746	8.446746	8.446746