This factor takes into account the amount and frequency of precipitation in the study area. Annual average precipitation is fairly uniform across the pilot area and was assigned a value of 0.2. The average number of rainy days for this pilot is 225, which results in a low intensity value for for precipitation and an overall low reduction of protection āPā score overall
Annual average precipitation values used across the study area were classified into Pq values. The annual average number of rainy days was calculated from the adjacent Met Eireann station and the precipitation quantity was divided by this number.