condition mean min max ZT0-3 1240.15 1240.15 1240.15 ZT4-7 1424.2 1424.2 1424.2 ZT8-11 1169.3000000000002 1169.3000000000002 1169.3000000000002 ZT12-15 706.0 706.0 706.0 ZT16-19 640.2 640.2 640.2 ZT20-23 635.15 635.15 635.15