condition mean min max ZT0-3 121.553 121.553 121.553 ZT4-7 107.007 107.007 107.007 ZT8-11 96.63785 96.63785 96.63785 ZT12-15 95.1691 95.1691 95.1691 ZT16-19 103.69125 103.69125 103.69125 ZT20-23 102.36500000000001 102.36500000000001 102.36500000000001