APPENDIX C 89 



180 150 120 90 60 30 30 60 90 120 150 



ISO 150 120 90 60 30 30 60 90 120 150 180 



Figure C-51. Lapse rate of refractivity (N/fcm) exceeded 5 percent of time for 100-m layer: August. 



Figure C-52. Lapse rate of refractivity (N/fcm) exceeded 2 percent of time for 100-m layer: August. 



