condition mean min max ZT0-3 25.161775000000002 22.339750000000002 27.983800000000002 ZT4-7 17.478650000000002 17.478650000000002 17.478650000000002 ZT8-11 18.4525 18.4525 18.4525 ZT12-15 0 0 0 ZT16-19 18.971 18.971 18.971 ZT20-23 17.05575 17.05575 17.05575