condition mean min max ZT0-3 55.06335 55.06335 55.06335 ZT4-7 51.7277 51.7277 51.7277 ZT8-11 15.483699999999999 15.483699999999999 15.483699999999999 ZT12-15 5.132395 5.132395 5.132395 ZT16-19 18.86675 18.86675 18.86675 ZT20-23 49.51305 49.51305 49.51305