condition mean min max ZT0-3 0.6483083304999999 0.518878165 0.7777384959999999 ZT4-7 2.29806064875 1.9991291105 2.596992187 ZT8-11 3.22539511625 2.4492069655 4.001583267 ZT12-15 10.020748808499999 8.9870117355 11.0544858815 ZT16-19 7.762767767 6.899376722 8.626158812 ZT20-23 4.44158229975 3.6344449465 5.248719653