condition mean min max ZT0-3 0.5121205 0.462851 0.5613900000000001 ZT4-7 0.4733115 0.4733115 0.4733115 ZT8-11 0.3754 0.3754 0.3754 ZT12-15 0 0 0 ZT16-19 0.6439555 0.6439555 0.6439555 ZT20-23 0.277061 0.277061 0.277061