As Fig. 2, but the annual global mean anomaly temperature reconstructions in centigrade of 20CR (a, b) / CMIP (c, d) test-suite of monthly grid reconstructions of the held-out 56th / 145th member using the HadCRUT4 missing value mask (1870-2005). In black the original held-out member, in black-dashed the original but masked held-out member to see the effect of the missing values. In blue/red the reconstructed grid time-series of the 20crAI/cmipAI. Tables show anomaly correlation (r) and root mean squared error (rmse) compared to the original dataset on four selected time ranges. (see also Fig. 2).