condition mean min max ZT0-3 56.1348 56.1348 56.1348 ZT4-7 42.689 42.689 42.689 ZT8-11 34.802350000000004 34.802350000000004 34.802350000000004 ZT12-15 39.0371 39.0371 39.0371 ZT16-19 48.47555 48.47555 48.47555 ZT20-23 58.087599999999995 58.087599999999995 58.087599999999995