COMPARISON WITH INDEPENDENT DATA 



343 



— I 1 1 I 1 



AMUNDSEN -SCOTT STATION 

 SOUTH POLE, ANTARCTICA 



LAT = 90° S 



LONG. - N A. 



ELEV = 2800 m 



OBSERVED FIT- 

 •=-5.89»tt0520 Ns 

 S E =«006mtad^^ |8„ = 20n 



^STANDARD PREDICTION 



ERROR LIMITS 



(67% CONFIDENCE) 



^STANDARD SAMPLE 

 T = -OI40t000963N5 

 (PREDICTION ERROR: lOOl r 



DAKAR, SENEGAL, AFRICA 

 LAT= 14° 43' N 

 LONG =17° 14' W 

 ELEV. = 40 m 



-OBSERVED FIT 

 l56>003l6Ns 

 -'\ SE = «033iT 



!£l STANDARD SAMPLE 



r'-287>00358Ns 



^STANDARD PREDICTION 



ERROR LIMITS 



(67% CONFIDENCE) 



^—STANDARD SAMPLE 



T = -QI40. 0,00963 Ns 



(PREDICTION ERROR = '0 01 



200 210 220 230 240 250 260 2?0 



320 330 340 350 360 370 



MOSCOW, USSR 

 LAT =55° 49' N 

 L0NG = 37°37'E 

 ELEV = 186m 



20 mrad| ,,---C-i: 



^OBSERVED FIT 

 r=-4l9.00390Ns 

 SE ='0 ISmrad 



STANDARD SAMPLE 

 T=-0l40>000963Ns 

 (PREDICTION ERROR. >0 01 r 



BANGUI, CENTRAL AFRICAN REPUBLIC 

 LAT = 4° 23' N 

 LONG = 18° 34' E, 

 ELEV =385 m 



"■STANDARD PREDICTION 



ERROR LIMITS 



(67% CONFIDENCE) 



OBSERVED FIT 

 = -6 l7-00457Ns 

 S E = t0 34rnrod 



STANDARD SAMPLE 



T = -0 I40'000963N5 



(PREDICTION ERROR = 'OOImrod) 



290 300 310 320 330 340 350 360 



310 320 330 340 350 360 370 3«0 



Figure 8.19. Comparison of predicted refraction at h equals 70 km for Oqs of 20 mrad 

 and 100 mrad from regressions of the CRPL standard sample and ray-traced values 

 from four independent locations. 



