This map from 10-June-2003 covers from 17:46z to 19:34z. This was a spotty opening which allowed some QSOs between EA8 and southern F / northern EA with the MUF hardly reaching 150 MHz. Please notice the second ES cloud that was over northern Italy and that unfortunately didn't reach 144 MHz. If it would have reached higher frequencies double skip QSO would have been very possible from/to EA8 at that time.
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It shows the evolution, size and MUF of the sporadic-E cloud that caused the opening on 144 MHz. and it is an estimation based on the information I have picked up here and there of QSOs and reports of European stations. I don't claim it to be accurate but just an estimation that could help understand what happened that day.
Also please notice that sometimes you will see MUF rise very quickly. This is because of the almost complete lack of data for frequencies between 51 and 144 MHz. and that leads to shown MUF rising almost 90 MHz in one minute. You should understand that this is not the usual behaviour of MUF, but the result of the lack of data mentioned above.
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