condition mean min max ZT0-3 210.56725167500002 164.46256430000003 256.67193905 ZT4-7 253.59442845 223.97648715000003 283.21236975 ZT8-11 119.7353686975 89.21370632 150.257031075 ZT12-15 29.5067407675 25.370785575 33.64269596 ZT16-19 44.1326394525 42.679495345 45.58578356 ZT20-23 42.9417577775 38.388047325 47.49546823