Joumal of Atmosphericand TerrestrialPhysics, 191%.Vol. 27, pp. 279 to 286. Pergamon Press Ltd. Printed in Korthem Ireland
Indices of the Observatorie...
Joumal of Atmosphericand TerrestrialPhysics, 191%.Vol. 27, pp. 279 to 286. Pergamon Press Ltd. Printed in Korthem Ireland
Indices of the Observatories
of geomagnetic
HARTLAND
(Ha)
activity
ESKDALEM~
April-November
(ES)
LERWICK
(Le)
1964
The figures given on pages 279 to 286 represent the K-indices for three-hour intervals, beginning with 00-03 hrs for the first and ending with 21-24 hrs for the eighth figure.