Apparently several hundreds of lunar occultation are more splendid. Ninety of planetary occultation were obviously the most precise measurement with naked eyes. Chinese had known sunspots since early times. In the legend times, the god of the sun was a black bird with tree legs on the splendid disc. The sunspots were described like star, bird, melon, egg, fruit even a man.
Sunspots reflect solar activity in historic period, while another useful sort is aurora.
Apparently aurora reports are a little ambiguous. There were hundreds of such records. At least 60 guest star records have been considered supernova or nova event. Comet is another sort of large quantity record. Because comets have apparent position and figure changes, we get more detail report on those event, sometimes more than ten records for a comet on different days.