condition mean min max ZT0-3 12.7421 12.7421 12.7421 ZT4-7 11.02345 11.02345 11.02345 ZT8-11 7.698130000000001 7.698130000000001 7.698130000000001 ZT12-15 7.76182 7.76182 7.76182 ZT16-19 10.44585 10.44585 10.44585 ZT20-23 10.4772 10.4772 10.4772