condition mean min max ZT0-3 125.80000000000001 125.80000000000001 125.80000000000001 ZT4-7 84.6 84.6 84.6 ZT8-11 111.44999999999999 111.44999999999999 111.44999999999999 ZT12-15 167.60000000000002 167.60000000000002 167.60000000000002 ZT16-19 182.15 182.15 182.15 ZT20-23 142.2 142.2 142.2