(UPDATE: There seems to be transcription error in the soil contamination numbers at the Okuma-machi official website, so I corrected them: 4.5 million --> 450K, 295 million --> 29.5 million. I've alerted the Okuma-machi HP.)
It was in the vicinity of the 1.3 sievert/hr spot it found on November 14. Mainichi Shinbun reports that the cleanup operation by the Packbot is not going well.
Mainichi Shinbun (11/20/2011):
TEPCO announced on November 20 that 1600 millisieverts/hour radiation was measured on the 1st floor of Reactor 3 reactor building at Fukushima I Nuclear Power Plant. It is the highest measurement [so far] in Reactor 3 building. On November 14, 1300 millisieverts/hour radiation was detected nearby. The measurement was conducted as [the robot] tried to wipe off the small amount of water which may have leaked from the Containment Vessel. According to TEPCO, the cleaning operation by the robot is not going well.
On a separate note, Quince, who got lost in October somewhere in the high radiation upper floors of Reactor 2, remains lost. As if as an obituary, NHK had a special program detailing the development of Quince.
On yet another note, Okuma-machi, where part of Fukushima I Nuke Plant is located, just re-elected the mayor who ran on the platform of "Let's all return to our home town", demanding thorough decontamination and rehabilitation of the infrastructure so that people can return as soon as possible.
Okuma-machi's highest air radiation level at 1 meter off the ground exceeds 100 microsieverts/hour. Soil contamination? About 454K becquerels/kg, or 29.5 million becquerels/square meter (numbers corrected; wrong number given at the official HP of the town). Nothing compared to the Fuku-I compound, I'm sure.