Open Access

Table 1

Number of Digisonde-derived Hm values in each 20 km-wide bin in altitude, percentage from the total number, and accumulated percentage in each bin. The numbers in the first column show the lower value of the bin range.

Bins Number of values % of total Accumulated %
240 2 0.0002 0.0002
220 0 0.0000 0.0002
200 0 0.0000 0.0002
180 1009 0.0872 0.0869
160 6 0.0005 0.0874
140 14 0.0012 0.0886
120 94 0.0081 0.0967
100 854 0.0734 0.1701
80 9289 0.7983 0.9684
60 71 214 6.1203 7.0887
40 314 088 26.9936 34.0823
20 637 417 54.7814 88.8638
0 129 577 11.1362 100.0000

Total 1 163 564 values.

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.