condition mean min max ZT0-3 1530.15 1530.15 1530.15 ZT4-7 1269.3 1269.3 1269.3 ZT8-11 1741.3000000000002 1741.3000000000002 1741.3000000000002 ZT12-15 2142.6 2142.6 2142.6 ZT16-19 1916.6 1916.6 1916.6 ZT20-23 1570.5 1570.5 1570.5