Table 5

Autoscaling results of the oblique ionograms data set of 24 ionograms recorded on October 8, 2015, when the Ap index had a value of 45, corresponding to disturbed geomagnetic conditions were recorded. Accurate cases (ǀMUFOISAMUFOperatorǀ≤0.5 MHz) are a subset of acceptable cases (ǀMUFOISAMUFOperatorǀ≤1.5 MHz).

  Scaled by OIASA Discarded by OIASA

No. of cases % No. of cases %
The Operator did not scale the MUF 1 6.25 7 87.5
The operator scaled the MUF 15 93.75 1 12.5
Total 16 8
  Scaled by OIASA and the operator

No. of cases %
Accurate 10 66.7
Acceptable (including accurate) 14 93.3
Poor 1 6.7
Total 15

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.