condition mean min max ZT0-3 9.3642 8.779995 9.948405000000001 ZT4-7 5.43293 5.43293 5.43293 ZT8-11 6.65076 6.65076 6.65076 ZT12-15 0 0 0 ZT16-19 8.76971 8.76971 8.76971 ZT20-23 9.858935 9.858935 9.858935