condition mean min max ZT0-3 11.477364999999999 10.37183 12.582899999999999 ZT4-7 7.6289750000000005 7.6289750000000005 7.6289750000000005 ZT8-11 7.982825 7.982825 7.982825 ZT12-15 0 0 0 ZT16-19 9.696135 9.696135 9.696135 ZT20-23 10.159410000000001 10.159410000000001 10.159410000000001