IV 



Selected Undisturbed Days: — Pao-e 



Declination - - . ... . . 226 



Horizontal Intensity . . . •• . . 232 



Vertical Intensity - - ..... 238 



Hourly means of Selected Undisturbed Days ... 244 



Selected Disturbed Days : — • 



Declination --..... 246 



Horizontal Intensity ...... 248 



Vertical Intensity ----.. 250 



Journal of Auroral Observations .... . 253 



