condition mean min max ZT0-3 0.763999 0.763999 0.763999 ZT4-7 1.38617 1.38617 1.38617 ZT8-11 1.2691189999999999 1.2691189999999999 1.2691189999999999 ZT12-15 0.8359415 0.8359415 0.8359415 ZT16-19 1.900666 1.900666 1.900666 ZT20-23 1.6167433333333334 1.6167433333333334 1.6167433333333334