condition	mean	min	max
4 h after light	8.745616666666667	8.62418	8.883389999999999
8 h after light	8.573933333333333	8.47546	8.69515
12 h after light	8.60765	8.54566	8.678189999999999
4 h after dark	8.77894	8.5007	9.02885
8 h after dark	8.614049999999999	8.46304	8.70307
12 h after dark	8.732003333333333	8.54626	8.949689999999999