condition mean min max ZT0-3 15516.6122 15516.6122 15516.6122 ZT4-7 8668.6965285 8668.6965285 8668.6965285 ZT8-11 6264.8904 6264.8904 6264.8904 ZT12-15 10338.2293175 10338.2293175 10338.2293175 ZT16-19 13586.843945 13586.843945 13586.843945 ZT20-23 18103.168579999998 18103.168579999998 18103.168579999998