|Direct Sample Counts and Reliable Dung Counts||133,829||20,829||20,829||0|
|Cause of Change||Definite||Probable||Possible||Speculative|
|Data Category||Known Range||Possible Range||Total Range|
|Direct Sample Counts and Reliable Dung Counts||88,352||11,190||99,543|
|Cause of||Survey Details2||Number of Elephants||Area||Map Location|
|Input Zone||Change1||Type||Reliab.||Year||Estimate||95% C.L.||Source||PFS3||(km²)||Lon.||Lat.|
|Chobe National Park & Environs||RS||AS2||B||2006||40,767||10,539||DWNP, 2006||2||12,195||24.6E||18.5S|
|Nxai Pan & Makgadikgadi National Parks||RS||AS3||B||2006||1,436||1,950||DWNP, 2006||2||11,476||24.8E||20.4S|
|Okavango Delta||RS||AS2||B||2006||31,191||7,191||DWNP, 2006||2||17,160||23.1E||19.4S|
|Rest of Northern Botswana||RS||AS2||B||2006||80,226||16,334||DWNP, 2006||1||118,303||23.5E||19.7S|
|Tuli Game Reserve||DT||AS2||B||2006||1,038||685||DWNP, 2006||2||3,510||29.1E||22.2S|
* Range of informed guess
1Key to Causes of Change (only tracked since 2007): DA: Different Area; DD: Data Degraded; DT: Different Technique; NA: New Analysis; NG: New Guess; NP: New population; PL: Population Lost; RS: Repeat Survey (RS ́ denotes a repeat survey that is not statistically comparable for reasons such as different season); –––: No Change
2Key to Survey Types: AC: Aerial Count, not specified; AS: Aerial Sample Count; AT: Aerial Total Count; DC: Dung Count; EX: Extrapolation from GIS; GD: Genetic Dung Count; GS: Ground Sample Count; GT: Ground Total Count; IG: Informed Guess; IR: Individual Registration; OG: Other Guess. Survey Type is followed by an indicator of survey quality, ranked from 1 to 3 (best to worst). Survey Reliability is keyed A-E (best to worst) as outlined in this table.
3PFS: Priority for Future Surveys, ranked from 1 to 5 (highest to lowest). Based on the precision of estimates and the proportion of national range accounted for by the site in question, PFS is a measure of the importance and urgency for future population surveys. All areas of unassessed range have a priority of 1. See Introduction for details on how the PFS is derived.