condition mean min max ZT0-3 45.2079 45.2079 45.2079 ZT4-7 35.455200000000005 35.455200000000005 35.455200000000005 ZT8-11 41.7857 41.7857 41.7857 ZT12-15 36.66715 36.66715 36.66715 ZT16-19 36.24315 36.24315 36.24315 ZT20-23 48.6657 48.6657 48.6657