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Graphs of Activity Level every month

The activity level with using RMOJ monthly report is provided.

Graphs of combined result and each observing station

What is "Activity Level" ?

This project adopts the new index which is "Activity Level" as relative value. This new index means how many times were echoes observed compared to background echo level. And two factors were considered. One is radiant factor. This factor is same as Visual observation which is 1/sin(h). Another is the elimination of error data.

You can see information of this method in research page.
The International Project for Radio Meteor Observation 2001-2003
* about this method in around 13th sheet
(H.Ogawa et al., The International Meteor Conference in 2003 )