A gauge repeatability and reproducibility study for a new height gauge was performed at the vendor location prior to shipment. Data was generated for $2$ appraisers, each measuring $10$ parts, $2$ times. The results are located in the file height.dat. Perform a potential capability analysis, then answer the following questions. The part specification tolerance range is $480$ to $495.$

What is the value for percent contribution for the Total Gage R&R$?$