condition mean min max ZT0-3 149.1 149.1 149.1 ZT4-7 90.0 90.0 90.0 ZT8-11 173.5 173.5 173.5 ZT12-15 176.10000000000002 176.10000000000002 176.10000000000002 ZT16-19 94.85 94.85 94.85 ZT20-23 109.05 109.05 109.05