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Table 3.

Comparison of TSI reconstructions from different Ca II K series (columns) to various TSI reference sets (rows).

(1) (2)
 (3)
 (4)
RP Te Ba MS Br CL SF MDW MLW
Bsat [G] 201 352 196 323 200 117 143 61 185
PMOD RMS [Wm−2] 0.21 0.27 0.24 0.32 0.21 0.28 0.28 0.26 0.18
R 0.91 0.78 0.79 0.80 0.89 0.83 0.84 0.82 0.90
Bsat [G] 188 427 254 393 291 198 139 64 216
ACRIM RMS [Wm−2] 0.35 0.33 0.28 0.40 0.30 0.36 0.39 0.33 0.24
R 0.81 0.48 0.58 0.63 0.53 0.58 0.73 0.63 0.65
Bsat [G] 205 361 198 339 212 122 143 63 189
RMIB RMS [Wm−2] 0.23 0.27 0.23 0.33 0.19 0.27 0.29 0.26 0.18
R 0.90 0.78 0.80 0.78 0.89 0.83 0.84 0.81 0.89
Bsat [G] 207 344 190 320 230 134 146 57 167
GEA18 RMS [Wm−2] 0.23 0.26 0.29 0.33 0.21 0.29 0.28 0.26 0.20
R 0.90 0.81 0.74 0.78 0.86 0.81 0.83 0.83 0.90
Bsat [G] 200 353 197 476 200 117 141 61 185
SOHO/VIRGO RMS [Wm−2] 0.22 0.28 0.25 0.16 0.22 0.29 0.29 0.26 0.19
R 0.91 0.78 0.78 0.83 0.88 0.82 0.84 0.82 0.89
Bsat [G] 212 321 183 – 200 110 143 60 157
SORCE/TIM RMS [Wm−2] 0.17 0.26 0.26 – 0.18 0.27 0.20 0.24 0.18
R 0.91 0.82 0.78 – 0.90 0.83 0.88 0.84 0.91
Bsat [G] 202 349 189 297 207 109 145 63 182
SATIRE-S RMS [Wm−2] 0.20 0.25 0.22 0.37 0.18 0.29 0.30 0.26 0.19
R 0.92 0.80 0.81 0.74 0.91 0.82 0.81 0.81 0.89
Bsat [G] 238 493 260 396 328 203 165 70 213
SATIRE-T RMS [Wm−2] 0.34 0.35 0.32 0.46 0.32 0.36 0.39 0.35 0.27
R 0.72 0.53 0.50 0.48 0.55 0.66 0.65 0.61 0.71
Bsat [G] 263 – – 332 – – 189 43 142
SATIRE-T2 RMS [Wm−2] 0.33 – – 0.41 – – 0.37 0.33 0.19
R 0.76 – – 0.70 – – 0.68 0.77 0.77
Bsat [G] 188 310 164 297 174 103 137 50 152
EMPIRE RMS [Wm−2] 0.25 0.30 0.30 0.37 0.24 0.33 0.31 0.27 0.21
R 0.90 0.78 0.76 0.77 0.85 0.77 0.82 0.84 0.90
Bsat [G] 202 319 173 312 181 100 144 57 159
NRLTSI RMS [Wm−2] 0.24 0.28 0.28 0.37 0.21 0.32 0.30 0.27 0.21
R 0.89 0.79 0.76 0.76 0.89 0.78 0.82 0.82 0.89
Bsat [G] 213 331 181 332 185 107 153 57 162
NN-SIM RMS [Wm−2] 0.23 0.30 0.29 0.35 0.23 0.34 0.30 0.27 0.21
R 0.88 0.75 0.73 0.75 0.87 0.76 0.80 0.82 0.88
Bsat [G] 204 320 172 492 185 100 142 58 168
PSUM RMS [Wm−2] 0.21 0.23 0.23 0.19 0.17 0.25 0.29 0.28 0.19
R 0.91 0.86 0.83 0.76 0.93 0.86 0.83 0.80 0.89
Bsat [G] 194 417 222 321 260 145 133 74 214
MD1 RMS [Wm−2] 0.28 0.19 0.14 0.35 0.13 0.23 0.35 0.21 0.19
RMS* [Wm−2] 0.22 0.28 0.25 0.33 0.24 0.29 0.29 0.27 0.20
R 0.87 0.86 0.92 0.80 0.94 0.86 0.80 0.85 0.84
R* 0.92 0.74 0.77 0.80 0.83 0.80 0.85 0.79 0.86

Notes. The Ca II K series are divided into four groups: (1) RP (Sect. 4.1); (2) datasets employing a narrower bandwidth than RP (Sect. 5.2); (3) datasets employing a broader bandwidth than RP (Sect. 5.2); (4) datasets that have off-band observations (Sect. 5.2). The bottom section of the table shows the results when the reference dataset is, itself, the reconstruction from the MD1 Ca II K archive (see Sect. 5.6 for details). In this case, we also show the results of a comparison of the respective reconstruction to the PMOD TSI composite, marked with an asterisk in the table. The cells for the RMS differences are colour-coded from white to dark grey in the ranges [0, 0.2], [0.2, 0.3], [0.3, 0.4], [0.4, 0.5] Wm−2.

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