condition mean min max ZT0-3 16.3731 16.08045 16.66575 ZT4-7 13.305175 13.305175 13.305175 ZT8-11 10.158854999999999 10.158854999999999 10.158854999999999 ZT12-15 0 0 0 ZT16-19 10.024709999999999 10.024709999999999 10.024709999999999 ZT20-23 16.601 16.601 16.601