SUNSPOTS / SOLAR ACTIVITIES / NASA

SOLAR ACTIVITIES

SUNSPOTS

Contents

• Year: Year
• Month: Month
• Day: Day
• Daily total sunspot number: A value of -1 indicates that no number is available for that day (missing value)
• Standard Deviation: Input sunspot numbers from individual stations
• Number of Observations: Used to compute the daily value
• Definitive/Provisional Indicator: '1' indicates that the value is definitive. '0' indicates that the value is still provisional.