Irradiance data collected during SOGLOBEC M. Vernet Principle Investigator 2001: yrdays 119-153(NBP0103): Irradiance data collected on a Biospherical Instruments GUV500 (cosine irradiance) and integrated over 24-hour period, sunrise to sunset. All the remaining irradiance data was collected on both Biospherical Instruments GUV500 (cosine irradiance) and QSR250 (scalar irradiance) and integrated over a 24-hour period, sunrise to sunset. yrdays 208-239(NBP0104) 2002: yrdays 104-131(NBP0202) yrdays 215-258(NBP0204) lat + lon: noon positions