condition mean min max ZT0-3 8421.5 8421.5 8421.5 ZT4-7 6209.7 6209.7 6209.7 ZT8-11 7481.15 7481.15 7481.15 ZT12-15 11457.650000000001 11457.650000000001 11457.650000000001 ZT16-19 12224.45 12224.45 12224.45 ZT20-23 10001.7 10001.7 10001.7