condition mean min max ZT0-3 17.3754 17.3754 17.3754 ZT4-7 14.38455 14.38455 14.38455 ZT8-11 14.041350000000001 14.041350000000001 14.041350000000001 ZT12-15 14.35715 14.35715 14.35715 ZT16-19 20.12205 20.12205 20.12205 ZT20-23 17.03885 17.03885 17.03885