[better way/tune up?] rythmical variance meter

Hi guys

I've just coded this simple rythmical variance meter I've started by placing a timer with a bang connected to both inlets that tells me the interval of the last two events. I've then used stream 2 unpack and float division for getting the ratio between the events passed it thru a abs and then once again a stream 2 with an unpack 0 0 that goes thru a subtraction for metering the variance and then a zl stream 10 with a zl sum and a division by 10 to tell me the actual index of rythmical variance.. can you tell me if there is a better way to do this, or how can I improve this?