condition mean min max ZT0-3 8.06738 6.803585 9.331175 ZT4-7 8.443315 8.443315 8.443315 ZT8-11 5.40598 5.40598 5.40598 ZT12-15 0 0 0 ZT16-19 6.15222 6.15222 6.15222 ZT20-23 9.09441 9.09441 9.09441