condition mean min max ZT0-3 1547.58732 1547.58732 1547.58732 ZT4-7 1023.0178034999999 1023.0178034999999 1023.0178034999999 ZT8-11 1264.0644525 1264.0644525 1264.0644525 ZT12-15 1609.6557275 1609.6557275 1609.6557275 ZT16-19 1542.6409725 1542.6409725 1542.6409725 ZT20-23 1823.199713 1823.199713 1823.199713