condition mean min max ZT0-3 0.0182149 0.0182149 0.0182149 ZT4-7 0.0682112 0.0682112 0.0682112 ZT8-11 0.0203229 0.0203229 0.0203229 ZT12-15 0.032889 0.032889 0.032889 ZT16-19 0.0507441 0.0507441 0.0507441 ZT20-23 0.0099016 0.0099016 0.0099016