condition mean min max ZT0-3 926.7 926.7 926.7 ZT4-7 1044.0 1044.0 1044.0 ZT8-11 1177.6 1177.6 1177.6 ZT12-15 1104.4 1104.4 1104.4 ZT16-19 1100.45 1100.45 1100.45 ZT20-23 1092.0500000000002 1092.0500000000002 1092.0500000000002