condition mean min max ZT0-3 1278.85 1278.85 1278.85 ZT4-7 1203.6 1203.6 1203.6 ZT8-11 1202.0 1202.0 1202.0 ZT12-15 1283.05 1283.05 1283.05 ZT16-19 1532.0500000000002 1532.0500000000002 1532.0500000000002 ZT20-23 1309.65 1309.65 1309.65