35" 



30° — 



25° — 



20° — 



15° 



145° 140° 135° 130° 



Figure 1 1 . See caption for figure 2. 



125° 



120° 



115° 



110° 



35° 



30° — 



25° — 



20° — 



15° 



145° 140° 135° 130° 



Figure 12. See caption for figure 2. 



125° 



120° 



115° 



110° 



69 



