Microgray

So I'm going to convert this: 1 microgray = .001 millisievert ❋ Maggie Koerth-Baker (2011)

On Wednesday, radiation levels at this one location in Mito spiked at .001 millisievert per hour 1 microgray, but didn't stay there for very long. ❋ Maggie Koerth-Baker (2011)

An x-ray typically has 100 microgray of radiation. ❋ Unknown (2011)

In Kitaibaraki City, located between Tokyo and the damaged plant, radiation was at 0.783 at 3 p.m., down from readings above 1 microgray on March 18. ❋ Unknown (2011)

Radiation measured in Tokyo, 220 kilometers 140 miles south of Fukushima, declined marginally yesterday, to 0.0480 microgray per hour between 3 p.m. and 4 p.m. local time yesterday. ❋ Unknown (2011)

The gray is a large unit and for normal radiation protection levels a series of prefixes are used: nanogray (nGy) is one thousand millionth of a gray (1/1,000,000,000) microgray (µGy) is one millionth of a gray (1/1,000,000) milligray (mGy) is one thousandth of a gray (1/1,000) ❋ Unknown (2009)