condition mean min max ZT0-3 149.56675 125.06450000000001 174.06900000000002 ZT4-7 77.34035 77.34035 77.34035 ZT8-11 29.53 29.53 29.53 ZT12-15 0 0 0 ZT16-19 76.74965 76.74965 76.74965 ZT20-23 90.19735 90.19735 90.19735