What you see is what there is. I went out Pioneers and Old Cheney the other night and those results show up on Sensorly. I didn't perform a run to the east on Van Dorn, but I'd imagine that between 98th and 112th is about the extent. Still not bad. If you're on a hill crest you'll be good. If a valley, maybe. After 112th it dropped, and I think that the Stevens Creek watershed is pretty flat further east so you're not likely to get any further than what I've mapped.
Having stated all that, I haven't bothered to make a run out O Street or A Street, so maybe if I'm feeling inspired I give those two major arterials a shot. I'd imagine the coverage is about the same. 112th Street will be the furthest east it's likely to stretch.