condition mean min max ZT0-3 29.578650000000003 29.1142 30.043100000000003 ZT4-7 36.17575 36.17575 36.17575 ZT8-11 35.37165 35.37165 35.37165 ZT12-15 0 0 0 ZT16-19 30.64015 30.64015 30.64015 ZT20-23 29.86515 29.86515 29.86515