Fig. 8From: Prediction of global ionospheric VTEC maps using an adaptive autoregressive modelBias of the differences between forecasting products ARPG and C1PG, and the final CODG product in 2009 and 2015. a Bias of ARPG minus CODG in 2009. b Bias of C1PG minus CODG in 2009. c Bias of ARPG minus CODG in 2015. d Bias of C1PG minus CODG in 2015Back to article page