Reporting the results:
Mikumi National Park elephant data
The frequencies of sightings of different types of elephant groups in Mikumi National Park observed in wet and dry seasons (Figure 1) are significantly different. (Two-way Chi-square: X2 = 19.3, df = 3, N = 562, P < 0.05)
Figure 1. The composition of elephant groups in Mikumi National Park during wet- and dry- seasons