RT @spaceweather: Tests of sunspot number sequences: 3. Effects of regression procedures on the calibration of historic sunspot data https:…
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RT @spaceweather: Tests of sunspot number sequences: 3. Effects of regression procedures on the calibration of historic sunspot data https:…
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RT @spaceweather: Tests of sunspot number sequences: 3. Effects of regression procedures on the calibration of historic sunspot data https:…
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RT @spaceweather: Tests of sunspot number sequences: 3. Effects of regression procedures on the calibration of historic sunspot data https:…