condition mean min max ZT0-3 11.437624999999999 11.347349999999999 11.527899999999999 ZT4-7 8.815584999999999 8.815584999999999 8.815584999999999 ZT8-11 7.62631 7.62631 7.62631 ZT12-15 0 0 0 ZT16-19 9.292214999999999 9.292214999999999 9.292214999999999 ZT20-23 10.9825 10.9825 10.9825