condition mean min max ZT0-3 32.396100000000004 31.076999999999998 33.7152 ZT4-7 34.90135 34.90135 34.90135 ZT8-11 40.43435 40.43435 40.43435 ZT12-15 0 0 0 ZT16-19 39.0072 39.0072 39.0072 ZT20-23 35.824349999999995 35.824349999999995 35.824349999999995