condition mean min max ZT0-3 1946.45 1946.45 1946.45 ZT4-7 770.5 770.5 770.5 ZT8-11 894.15 894.15 894.15 ZT12-15 1367.75 1367.75 1367.75 ZT16-19 2475.8500000000004 2475.8500000000004 2475.8500000000004 ZT20-23 2456.8 2456.8 2456.8