INSTRUCTIONS FOR READING "A NUMERICAL OVERVIEW OF SALMON RUN TIMINGS IN BRITISH COLUMBIA CATCH AREAS"
Ledbetter, Max and Ray Hilborn. 1981. A numerical overview of salmon run timings in British Columbia catch areas. Cooperative Fisheries Research Unit (University of British Columbia), Report Number 1.
Salmon run timings change from year to year, and through time, but if you try using the average run timings presented in "A numerical overview of salmon run timings in British Columbia catch areas," the data may prove valuable. Still, statistical reports are often difficult to follow when they are not hardcopy (on paper), and "A numerical overview of salmon run timings in British Columbia catch areas" was originally written for scientists. Here are a few detailed instructions:
1) You can click on the Flash document and then use your up and down keys and page up (pg up) and page down (pg down) keys to browse through the pages, or you can use the scroll bar located on the right-hand edge. Also, you will find forward and back arrows on the control bar at the top of the document.
2) Now you will want to locate the run timing statistics. First go to page 17 in the document. Here is how to get there: Look at the control bar on top edge of the document and replace the "1/38" with "17/38" and hit enter (or click on the document and then use your page down key to browse to page 17; or simply click the forward arrow on the control bar).
3) Page 17 explains the tables containing the run timing data.
4) Move forward to page 18. Click on the rotate button on the control bar. The rotate button looks like two rectangles (two page icons) with a curved arrow in between them.
5) Now that you have rotated the run timing tables into position, you will most likely be viewing the table for Area 6 (Caamano Sound). The columns situated beneath the species names show you the proportion of the salmon run arriving in a given week. (The species names are sockeye, coho, etc.)
For example, when you look at the data for Area 6 and see that the proportion for sockeye is 0.1332 in week 20, it means that on average 13.32% of the sockeye run in Area 6 arrives during week 20. (You just multiply the proportion by 100 to get the percentage: 0.1332 times 100 is 13.32.)
The calender of weeks is on page 5. Week 20 is May 10 - 16. A good way to view a run timing table and the calender of weeks at the same time is to have two copies of the run timing report open in two separate browser windows or tabs.
(Note: You will also find CUMULATIVE proportions situated between the columns containing the weekly run timings. The CUMULATIVE proportions range from 0 to 1.)
6) You may now move forward and backward through the run timing tables for the various fishing areas.
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