condition mean min max ZT0-3 0.30082440875 0.0 0.6016488175 ZT4-7 7.47299382975 3.1213030225 11.824684637 ZT8-11 24.9181560675 20.948335255 28.88797688 ZT12-15 38.1499384575 34.496493705 41.80338321 ZT16-19 42.084444765 38.647629949999995 45.521259580000006 ZT20-23 63.510165575 54.627886845000006 72.392444305