condition mean min max ZT0-3 85.9148 85.9148 85.9148 ZT4-7 47.1776 47.1776 47.1776 ZT8-11 26.0535 26.0535 26.0535 ZT12-15 23.72015 23.72015 23.72015 ZT16-19 42.0621 42.0621 42.0621 ZT20-23 53.92805 53.92805 53.92805