condition mean min max ZT0-3 10.141265 10.141265 10.141265 ZT4-7 11.0004655 11.0004655 11.0004655 ZT8-11 10.909938 10.909938 10.909938 ZT12-15 10.627782 10.627782 10.627782 ZT16-19 11.02411 11.02411 11.02411 ZT20-23 11.990728 11.990728 11.990728