Figure 6.5: Reconstructions
of total solar irradiance (TSI) by Lean et al. (1995, solid red curve), Hoyt and
Schatten (1993, data updated by the authors to 1999, solid black curve), Solanki
and Fligge (1998, dotted blue curves), and Lockwood and Stamper (1999, heavy dash-dot
green curve); the grey curve shows group sunspot numbers (Hoyt and Schatten, 1998)
scaled to Nimbus-7 observations for 1979 to 1993.
