Conventional PCI. Conventional PCI, often shortened to PCI, is a local computer bus for attaching hardware devices in a computer. PCI is the initialism for Peripheral Component Interconnect and is part of the PCI Local Bus standard. The PCI bus supports the functions found on a processor bus but in a standardized format that is independent of any particular processor's native bus.
https://en.wikipedia.org/wiki/Conventional_PCI
If you lead a normal life, live in spaces that average 4 pCi/L of radon, and if you are: a never smoker. an ex-smoker. a smoker. then your lifetime risk of getting lung cancer that is related to your radon exposure is about.
http://radonsagas.com/radon.htm
If radon test results in occupied levels of your home are 4 to 20 pCi/L, it could take up to a year to get the work done. For test results above 20 pCi/L, it's important to get the work done soon as soon as possible. Call your Wisconsin Radon Information Center for more information.
https://www.dhs.wisconsin.gov/radon/radon-results.htm
So if you get a short-term result of 3 pCi/L, you can expect you long-term radon to be within the range from 1 to 9 pCi/L. A yearlong test in a living space where you spend a lot of time would be the most efficient and effective way for the first assessment of the radon hazard in your home.
http://radonsagas.com/radon.htm
Outdoor radon levels in the U.S. range from 0.02 to 0.75 pCi/L (picoCuries per liter), averaging 0.4 pCi/L. But homes draw concentrated radon gas from the ground. Because radon is nine times heavier than air, elevated radon levels build up in basements and on lower floors.
http://www.radonseal.com/radon-level.htm
The average (mean) radon level in US homes is 1.25 pCi/L, or three times higher than the average level outdoors. Nearly 8 million US homes, or 1 out of every 15, have radon levels above the EPA's 4 pCi/L action limit and nearly 1 out of 6 exceed the EPA's 2 pCi/L consider action limit.
http://www.radonseal.com/radon-level.htm
One pCi/l means that in one liter of air there will be 2.2 radioactive disintegrations each minute. For example, at 4 pCi/l there will be approximately 12,672 radioactive disintegrations in one liter of air, during a 24-hour period. 4 pCi/l is the level accepted by most states and US territories. In other countries, the action level ranges from 150 Bq m3, which is slightly less than 4 pCi/l, to no limit or preset action level. For example, in Canada the suggested action level is 200 Bq m3.
http://www.radon.com/radon_FAQ/
Picocuries per liter (pCi/L) is a unit for measuring radioactive concentrations. The curie (Ci) unit is the activity of 1 gram of pure radium 226. Pico is a scientific notation term which means 1*10. Another unit commonly used for radioactive concentrations is the SI unit Becquerels per meter cubed (Bq/m).
http://radonsagas.com/radon.htm
It is expressed in picoCuries per liter of air, or pCi/L. A Curie is a unit of radioactivity equivalent to 1 gram of radium and the prefix pico means a trillionth. In the metric system, radon concentration is expressed in Becquerels per cubic meter (Bq/m3).
http://www.radonseal.com/radon-level.htm
If follow-up measurements indicate your radon exposure is higher than 4 pCi/L (the U.S. EPA guideline), it can be significantly reduced. The higher your confirmed radon results are, the more important it is to fix your home. Outdoor air has about 0.4 pCi/L, and this is the lowest achievable level in a house.
https://www.dhs.wisconsin.gov/radon/radon-results.htm
what is pci/l
Picocuries per liter is a unit for measuring radioactive concentrations.   Picocuries per liter (pCi/L) is a unit for measuring radioactive concentrations.