condition mean min max ZT0-3 9.6505625 9.255635 10.045490000000001 ZT4-7 7.24916 7.24916 7.24916 ZT8-11 10.153565 10.153565 10.153565 ZT12-15 0 0 0 ZT16-19 11.20315 11.20315 11.20315 ZT20-23 10.822299999999998 10.822299999999998 10.822299999999998