The agency added, however, that the amount would not have any health effects as South Korea's background radiation currently remains at the usual level of 50-300 nanosieverts per hour."
How convenient of them to give measurements in apples and oranges.
I think it converts to 188.34 nSv
Not being a nuclear physicist nor having stayed at a Holiday Inn, I have to ask -- Is there a way to directly convert a concentration (mBq per cubic meter) value to a rate (nanosieverts per hour)?
The advantage of REM - no mili or micro or nano anything. 1 REM ok, but need to start being careful. 10 REM - that's more than you are allowed in a year; find another line of work. 50 REM - you're sick man. 100 REM - you could die. 500 REM, you're dead.