condition mean min max ZT0-3 0.45693296625 0.216077573 0.6977883595000001 ZT4-7 0.10914230825 0.089130346 0.1291542705 ZT8-11 10.50373745575 1.847332127 19.1601427845 ZT12-15 24.077599319999997 23.479043555 24.676155084999998 ZT16-19 30.844095524999997 27.322665025 34.365526024999994 ZT20-23 27.2723374105 20.390902086 34.153772735