In 2014/15 the West Yorkshire Local Authority Partnership measured the economic impact of the museums in the region using the AIM (Association of independant museums) methodology.
The data collected was encapusated in the West Yorkshire Museums: Making a Difference infographic.
The methodology can be found here http://www.aim-museums.co.uk/downloads/f6e017ac-8f11-11e3-8be4-001999b209eb.pdf
The longitude and latitude on the treasure dataset is a general pin point of the region/city.
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