The newest maps showing radiation levels around the plant grounds are posted here.
Newest monitoring post data at Fukushima Daiichi can be found here (in Japanese but translates well with Google Translate)
On these newest maps please note the high reading near the Administration Building of 2015.0 μSv/h.
It appears to be the highest on that map.
The plant complex map has a reading of note. The SGTS, this is part of the venting system that runs into the vent stack.
It has a reading of 10,000 mSv/h.
This is a worker standing next to the unit 1-2 vent tower near where that 10,000 mSv/h reading was taken in late 2011.