condition mean min max ZT0-3 10.700000000000001 10.700000000000001 10.700000000000001 ZT4-7 1.8 1.8 1.8 ZT8-11 4.45 4.45 4.45 ZT12-15 12.55 12.55 12.55 ZT16-19 11.75 11.75 11.75 ZT20-23 3.5999999999999996 3.5999999999999996 3.5999999999999996