The mean rainfall for the highland storms is 15.27 mm.
And, the mean rainfall for the lowland storms is 12.05 mm.
Calculation of the mean rainfall:
Since it is mentioned that The highlands have a mean rainfall of 15.27 millimeters, and the Lowlands have a mean rainfall of 12.05 millimeters.
So based on this, we can say that
The mean rainfall for the highland storms is 15.27 mm.
And, the mean rainfall for the lowland storms is 12.05 mm.
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