condition mean min max ZT0-3 572.85 572.85 572.85 ZT4-7 263.4 263.4 263.4 ZT8-11 155.4 155.4 155.4 ZT12-15 82.95 82.95 82.95 ZT16-19 55.45 55.45 55.45 ZT20-23 106.9 106.9 106.9