corrections to quantitative analysis of open-source data on metal detecting for cultural property

Regretfully, I have [had] to make corrections to my (open access) quantitative analysis of open-source data on metal detecting for cultural property: estimation of the scale and intensity of metal detecting and the quantity of metal-detected cultural goods. They do not undermine the findings or their significance. The miscalculation produced an underestimate that reduced the apparent significance of the results.