condition mean min max ZT0-3 45.68985 45.68985 45.68985 ZT4-7 27.0402 27.0402 27.0402 ZT8-11 31.496450000000003 31.496450000000003 31.496450000000003 ZT12-15 33.43865 33.43865 33.43865 ZT16-19 45.0659 45.0659 45.0659 ZT20-23 40.797250000000005 40.797250000000005 40.797250000000005