condition mean min max ZT0-3 11.640550000000001 11.640550000000001 11.640550000000001 ZT4-7 7.88916 7.88916 7.88916 ZT8-11 12.3458 12.3458 12.3458 ZT12-15 10.67716 10.67716 10.67716 ZT16-19 15.8462 15.8462 15.8462 ZT20-23 10.90145 10.90145 10.90145