File:Radon Lognormal distribution.gif
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| Description |
English: Day Care Radon concentration survey in North Dakota 1991-1992, showing a Lognormal distribution.
العربية: تراكيز الرادون خلال المسح الذي أجري في شمال داكوتا عامي 1991-1992 و يظهر توزع لوغاريتمي طبيعي. |
| Date | between 1991 and 1992 |
| Source | http://www.ndhealth.gov/aq/iaq/radon/day9192.htm |
| Author | Dakota Department of Human Services |
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This work is ineligible for copyright and therefore in the public domain because it consists entirely of information that is common property and contains no original authorship. |
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 23:00, 25 May 2009 | 1,280 × 822 (38 KB) | Biem | Bigger, enhanced contrast |
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