condition mean min max ZT0-3 3.685651406 3.427259115 3.9440436969999997 ZT4-7 5.3179320064999995 5.252054596 5.383809417 ZT8-11 41.65311553475 9.3163041595 73.98992691000001 ZT12-15 89.68955016 87.11453234 92.26456798 ZT16-19 55.3828894225 45.876382219999996 64.889396625 ZT20-23 30.4705008125 27.32288403 33.618117595