Table 1

Main characteristics of the five radio fluxes that are considered in this study.

Wavelength [cm] Measured at Observations started on Time window during which observations are made Average number of missing observations since Jan 1990 (days/yr)
3.2 Toyokawa/Nobeyama May 1956 23–07 UT 7.4
8.0 Toyokawa/Nobeyama Nov 1951 23–07 UT 2.5
10.7 Ottawa/Penticton Feb 1947 17–23 UT 0.3
15.0 Toyokawa/Nobeyama June 1957 23–07 UT 8.3
30.0 Toyokawa/Nobeyama March 1957 23–07 UT 6.0

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