You can tell they are Weck from the strawberry embossed on the lid!

ALTITUDE CHART
For Boiling Water Processing

If you are preserving at an altitude higher than 1,000 feet above sea level, adjust boiling water processing time as indicated.

ALTITUDE CHART
For Pressure Canning

If you are preserving at an altitude higher than 1,000 feet above sea level, adjust pressure pounds as indicated.