condition mean min max ZT0-3 23.480848333333334 10.590245 31.768749999999997 ZT4-7 44.64875 44.64875 44.64875 ZT8-11 119.43950000000001 119.43950000000001 119.43950000000001 ZT12-15 93.280375 60.63685 125.9239 ZT16-19 54.7381 54.7381 54.7381 ZT20-23 21.3593 21.3593 21.3593