The classification system for solar flares uses the letters A, B, C, M or X, according to the peak flux as measured at the Earth by the GOES spacecraft.
These are daily Class A sun flares. The data was created by counting daily flares of this class based on the peak time of the flare.
@jntagara, Thank you. I hope to be able to publish Class C, M and X soon too. Sadly have to always wait 30 days until I can publish 2 more scripts due to TVs limit on free users.