condition mean min max ZT0-3 154.1 154.1 154.1 ZT4-7 110.0 110.0 110.0 ZT8-11 133.45 133.45 133.45 ZT12-15 155.4 155.4 155.4 ZT16-19 219.10000000000002 219.10000000000002 219.10000000000002 ZT20-23 211.6 211.6 211.6