condition mean min max ZT0-3 45.896312355000006 43.750404380000006 48.04222033 ZT4-7 44.381004575 42.60886662 46.15314253 ZT8-11 43.02405942833333 42.12761631666667 43.92050254 ZT12-15 48.38897480666667 44.04821495 52.72973466333333 ZT16-19 44.95776056333334 44.90096002666667 45.0145611 ZT20-23 41.98766433666667 39.07583956333333 44.899489110000005