Fig. 1. Ratio W of radiations in the green-line and in the white-light corona passing through the narrow-band filter. Isolines are drawn with step = 0.15 and the numbers 1, 2, 3 correspond to logW = 0.15, 0.45 and 0.75, respectively
![[FIGURE]](img21.gif)
![[FORMULA]](img19.gif)
= 0.15 and the numbers 1, 2, 3 correspond to logW = 0.15, 0.45 and 0.75, respectively