A botanist investigated the adaptation of Olea europaea (olive tree) leaves to arid conditions by measuring their stomatal density on the lower epidermis. They used a light microscope to count the number of stomata in five independent square fields of view.
The edge of each square field of view measured 250 μm250\text{ }\mu\text{m}250 μm.
The number of stomata recorded in the five fields of view were:
Calculate the mean stomatal density for these fields of view. Give your answer as the number of stomata per mm2\text{mm}^2mm2. Show your working.