condition mean min max ZT0-3 1242.5 1242.5 1242.5 ZT4-7 787.2 787.2 787.2 ZT8-11 889.9 889.9 889.9 ZT12-15 1035.55 1035.55 1035.55 ZT16-19 1215.6 1215.6 1215.6 ZT20-23 1306.85 1306.85 1306.85