condition mean min max ZT0-3 34.4407 34.4407 34.4407 ZT4-7 29.661099999999998 29.661099999999998 29.661099999999998 ZT8-11 26.51005 26.51005 26.51005 ZT12-15 27.6096 27.6096 27.6096 ZT16-19 32.32755 32.32755 32.32755 ZT20-23 35.356049999999996 35.356049999999996 35.356049999999996