condition mean min max ZT0-3 62.360218 62.360218 62.360218 ZT4-7 29.7691 29.7691 29.7691 ZT8-11 57.2929535 57.2929535 57.2929535 ZT12-15 82.3854905 82.3854905 82.3854905 ZT16-19 73.374691 73.374691 73.374691 ZT20-23 58.032557 58.032557 58.032557