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In this example, there is data available for Ethiopia the United Republic of Tanzania for Admin 1 and Admin 2 levels. Data in all 11 30 Admin 1 units and all 77 169 Admin 2 units are well defined from 2014 2012 to 2022.
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However, only 39 97 of the 77 169 Admin 2 units, and none of the Admin 1 units, are well defined for every year between 1999 2004 and 2022.
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