condition mean min max ZT0-3 2149.551079 2149.551079 2149.551079 ZT4-7 1707.9115915 1707.9115915 1707.9115915 ZT8-11 1630.579731 1630.579731 1630.579731 ZT12-15 1686.2017085000002 1686.2017085000002 1686.2017085000002 ZT16-19 1607.521931 1607.521931 1607.521931 ZT20-23 1776.4002275 1776.4002275 1776.4002275