condition mean min max ZT0-3 12.243025000000001 11.280650000000001 13.205400000000001 ZT4-7 10.666865 10.666865 10.666865 ZT8-11 15.899650000000001 15.899650000000001 15.899650000000001 ZT12-15 0 0 0 ZT16-19 18.900100000000002 18.900100000000002 18.900100000000002 ZT20-23 15.93765 15.93765 15.93765