condition mean min max ZT0-3 8430.2 8430.2 8430.2 ZT4-7 9027.4 9027.4 9027.4 ZT8-11 9852.45 9852.45 9852.45 ZT12-15 11483.35 11483.35 11483.35 ZT16-19 10564.2 10564.2 10564.2 ZT20-23 8914.8 8914.8 8914.8