condition mean min max ZT0-3 1385.1 1385.1 1385.1 ZT4-7 1106.6 1106.6 1106.6 ZT8-11 961.8499999999999 961.8499999999999 961.8499999999999 ZT12-15 1032.65 1032.65 1032.65 ZT16-19 1195.45 1195.45 1195.45 ZT20-23 1468.0500000000002 1468.0500000000002 1468.0500000000002