condition mean min max ZT0-3 11.789724999999999 11.2397 12.339749999999999 ZT4-7 43.6809 43.6809 43.6809 ZT8-11 11.942499999999999 11.942499999999999 11.942499999999999 ZT12-15 0 0 0 ZT16-19 46.07 46.07 46.07 ZT20-23 2.46834 2.46834 2.46834