condition mean min max ZT0-3 1482.85 1482.85 1482.85 ZT4-7 2019.2 2019.2 2019.2 ZT8-11 1498.9 1498.9 1498.9 ZT12-15 1300.3000000000002 1300.3000000000002 1300.3000000000002 ZT16-19 1485.6 1485.6 1485.6 ZT20-23 1274.8000000000002 1274.8000000000002 1274.8000000000002