Labor is measured in thousands of male agricultural workers engaged in agriculture. Capital is measured in thousands of horsepower, aggregating over riding and garden tractors engaged in agricultural production.
Wages are the daily rate paid per worker, in U.S. dollars.
Plot these against agricultural wages. Note that you will need to drop countries with missing values on wages from the plot. In Excel, you can sort the data by wage and then restrict the plot to the countries with positive wage values. Plot these unit labor costs against wages.