condition mean min max ZT0-3 10.182389 10.182389 10.182389 ZT4-7 10.943624 10.943624 10.943624 ZT8-11 10.509107499999999 10.509107499999999 10.509107499999999 ZT12-15 10.192078500000001 10.192078500000001 10.192078500000001 ZT16-19 10.635859499999999 10.635859499999999 10.635859499999999 ZT20-23 10.4894985 10.4894985 10.4894985