Numeri caratteristici definitivi dei flocculi di calcio per gli anni internazionali di quiete solare

Abstract

The definitive character figures of the Ca bright flocculi
for THE INTERNATIONAL Quiet Sun Years are given. The observational material
used has been collected at Arcetri World D a t a Center for the Ca bright
flocculi, as a p a r t of the IQSY international programme.
These characte r figures take t h e place of those already published according to the only observations carried out at t h e Arcetri solar tower