Table 2.

TSI values during solar minima from the comparison of and TSI. The uncertainty presented is the standard deviation of the 3–4 determinations and is only a measure of the differences between the records. ERBS corr and VIRGO records cover two minima, which allow the comparison of the overall trends from Table 1 with the change between the observed minima.

Minimum Data Values at minimum
TSI (Wm−2)
1976.50 SATIRE-S 0.239 3.649
1986.42 HFcorr 0.314
ERBS corr 0.148
ACRIM1 corr 0.253
SATIRE-S 0.250
Average 0.229 ± 0.060 2.959
1996.69 ERBS corr 0.191
ACRIM2 0.117
VIRGO 0.164
Average 0.157 ± 0.031 2.629
2008.99 ACRIM3 −0.031
VIRGO 0.028
TIM 0.008
Average 0.002 ± 0.024 0.789

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