condition	mean	min	max
4 h after light	8.4070405	8.080446	8.733635
8 h after light	8.749409499999999	8.733635	8.765184
12 h after light	8.709011	8.684387	8.733635
4 h after dark	9.274514	9.144167	9.404861
8 h after dark	7.7226425	6.930683	8.514602
12 h after dark	8.527508	8.527508	8.527508