condition mean min max ZT0-3 0.9644900000000001 0.96384 0.96514 ZT4-7 2.95021 2.95021 2.95021 ZT8-11 2.89216 2.89216 2.89216 ZT12-15 0 0 0 ZT16-19 2.84741 2.84741 2.84741 ZT20-23 2.851625 2.851625 2.851625