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

Abstract

The definitive character figures of the Ca bright flocculi<br />for THE INTERNATIONAL Quiet Sun Years are given. The observational material<br />used has been collected at Arcetri World D a t a Center for the Ca bright<br />flocculi, as a p a r t of the IQSY international programme.<br />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