Exactly the same as Art, 9.6mm, not sure whether thats correct or not, we haven't had that much rain just short showers here, the only thing I think it is might be the size of the rain drops, like today for instance we had a few shot lived showers but the rain drops were huge, I was out in the garden earlier and was pelted by what felt like egg cup sized drops, a few of them in your weather station cup wouldl total up a few mm pretty quick.