Example 2: 1  a sporadic form, which is caused by a somatic mutation in each of the two RB genes in a cell. 2  a familial (inherited) form, which is caused by a somatic mutation to one RB gene in a cell that already has one mutant RB gene inherited through the germline from a parent.
For the month of September 2012, Ketchikan reported average temperatures of 53.3Â°F, 0.8Â°F above the long-term mean of 52.5Â°F. The maximum temperature for the month was 67Â°F, which occurred on the 7th, while the minimum (41Â°F) was reported on the 16th.
Earlier records are either unavailable or unreliable. Ketchikan, Alaska has a mild humid temperate climate with warm summers and no dry season. The area within 25 mi of this station is covered by forests (54%) and oceans and seas (45%).ver the course of September typical wind speeds vary from 0 mph to 14 mph (calm to moderate breeze), rarely exceeding 23 mph (fresh breeze). The highest average wind speed of 8 mph (gentle breeze) occurs around September 27, at which time the average daily maximum wind speed is 14 mph (moderate breeze).