Data taken from 'Table 3. Status of small populations of elephants during the dry season of 2014' in the report cited, in which M. Sebele gives a speculative population of 70-100 elephants in cow herds, noting that 'Four cow herds seen by wildlife scouts'.
Source:Dunham, K. C. (2015). National Summary of Aerial Survey Results for Elephant in Zimbabwe: 2014 (p. 53). Harare, Zimbabwe: Parks and Wild Life Management Authority.