condition mean min max ZT0-3 48.544650000000004 36.4981 60.5912 ZT4-7 22.32525 22.32525 22.32525 ZT8-11 20.689799999999998 20.689799999999998 20.689799999999998 ZT12-15 0 0 0 ZT16-19 45.50335 45.50335 45.50335 ZT20-23 44.396699999999996 44.396699999999996 44.396699999999996