condition mean min max ZT0-3 131.022148 131.022148 131.022148 ZT4-7 96.84231600000001 96.84231600000001 96.84231600000001 ZT8-11 105.9733075 105.9733075 105.9733075 ZT12-15 102.444177 102.444177 102.444177 ZT16-19 184.17580999999998 184.17580999999998 184.17580999999998 ZT20-23 156.71710000000002 156.71710000000002 156.71710000000002