condition mean min max ZT0-3 110.64030765749999 110.03985279999999 111.240762515 ZT4-7 39.4083661725 33.981092035 44.83564031 ZT8-11 56.217871235 38.84291451 73.59282796 ZT12-15 76.690584095 76.528005895 76.853162295 ZT16-19 70.7948272975 67.64554068000001 73.944113915 ZT20-23 70.27809988 68.77042111 71.78577865