Provision fund coverage drop?

Hi all,

I'm a relatively new lender on RS and have been keeping half an eye on the Provision Fund coverage over the last couple of months. 

I've seen it wander up and down between 116% and 118%, but I see it's recently dropped down to 113%.

Any ideas why? The Market View looks about the same as normal in terms of spread of borrower and lender rates. 

Thanks,

Andy