condition mean min max ZT0-3 27.929583333333333 11.55085 41.6786 ZT4-7 13.92335 13.92335 13.92335 ZT8-11 57.2372 57.2372 57.2372 ZT12-15 77.543475 63.3633 91.72364999999999 ZT16-19 75.3857 75.3857 75.3857 ZT20-23 53.73895 53.73895 53.73895