condition mean min max ZT0-3 11.2699875 10.273824999999999 12.26615 ZT4-7 11.9847 11.9847 11.9847 ZT8-11 13.3206 13.3206 13.3206 ZT12-15 0 0 0 ZT16-19 20.965899999999998 20.965899999999998 20.965899999999998 ZT20-23 18.56625 18.56625 18.56625