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Solar How-to (In 3 Easy Steps!)

In general, choose your starting point as (0,0). This is the center point of the circle. Always move north or south first (the number of degrees that comes after the S or N in the AR number). The horizontal lines are in degree increments of 2's. Then move east or west (the number that comes after the E or W in the AR number). These east/west arcs are in degree increments of 10's. Here's an example for the first AR located at S07W88.

step one: locate the starting point
step two: move south by seven degrees
step three: move west 88 degrees (or right 88 degrees)

Don't forget to label your plot with the corresponding AR number so you don't get confused later on!

Last modified prior to September, 2000 by the Windows Team

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