condition mean min max ZT0-3 78.26103126 73.10517863999999 83.41688388 ZT4-7 72.08322816500001 69.94374472 74.22271161 ZT8-11 60.7999007675 54.879527065000005 66.72027446999999 ZT12-15 136.24825305 109.7527063 162.74379979999998 ZT16-19 182.37724865 167.79817165 196.95632565 ZT20-23 249.59693067499998 228.34683385 270.84702749999997