condition	mean	min	max
4 h after light	7.236685	6.8511	7.62227
8 h after light	5.93067	5.58553	6.27581
12 h after light	6.145795	5.73019	6.5614
4 h after dark	8.12829	7.96217	8.29441
8 h after dark	8.759395	8.22683	9.29196
12 h after dark	8.809805	8.42664	9.19297