APPENDIX C 87 





75- 

 70- 



180 150 120 90 



60 30 



60 90 120 150 



Figure C-47. Lapse rate of refractivity (N/fcm) exceeded 5 percent of time for 100-m layer: May. 



Figure C-48. Lapse rate of refractivity (N /km) exceeded 2 percent of time for 100-m layer: May. 



