condition mean min max ZT0-3 0.44720999999999994 0.22588 0.6685399999999999 ZT4-7 0.91565 0.91565 0.91565 ZT8-11 0.8344745 0.8344745 0.8344745 ZT12-15 0 0 0 ZT16-19 0.443978 0.443978 0.443978 ZT20-23 0.5215815 0.5215815 0.5215815