yes to a certain extent… i have not really compaired actual data… part of the reason is because of the whole metric system. i have noticed not detecting small rainfall… mist. reciently i stopped getting data when obviously raining and i had to take it down and clean the spoon and internals… then it went back to working… i spoke with seeed and they said they are working on adding actual accumulation to the software
i have never seen rainfall when not… but have seen missing rainfall
if you are noticing rainfall when it is not raining you may need to increase your update rate to like every 10 minutes… it may be you have update rate of 30 minutes… in that case if it rains till 0:35… it will report the first 30 minutes at the bottom of the hour and the the next 5 minutes will not be reported till the top of the hour… does that make sence?