condition mean min max ZT0-3 24.50275 21.8198 29.7962 ZT4-7 25.360500000000002 25.360500000000002 25.360500000000002 ZT8-11 31.5409 31.5409 31.5409 ZT12-15 36.799825 35.33175 38.2679 ZT16-19 38.4932 38.4932 38.4932 ZT20-23 39.439099999999996 39.439099999999996 39.439099999999996