condition mean min max ZT0-3 4.8789299999999995 4.6502099999999995 5.10765 ZT4-7 12.704899999999999 12.704899999999999 12.704899999999999 ZT8-11 30.87695 30.87695 30.87695 ZT12-15 0 0 0 ZT16-19 17.8701 17.8701 17.8701 ZT20-23 7.50001 7.50001 7.50001