Notes. The two values for the relative scale uncertainty of map No. 4 refer to the two different estimations for this in the publications of the northern and southern part of the survey, respectively. For scale uncertainties with a^(*) no explicit value was given by the authors. Instead, we estimated it by taking half of the smallest contour interval of that map and dividing it by its minimum brightness temperature. In the same way, zero-level errors with a^(†) were estimated by taking half of the smallest contour interval. To give the zero-level errors as a fraction of the average sky temperature, we calculated the latter from Eq. (4), where we took the average from using all seven considered sky models. For indicating in which models the maps are used, we use the following notation: 1 = GSM, 2 = GSM16, 3 = LFSM, 4 = LFmap, 5 = GMOSS, 6 = SSM, 7 = ULSA. Numbers in parentheses mark that the map is only used indirectly in the respective model.

References. (1) Caswell (1976); (2) Roger et al. (1999); (3) Dowell et al. (2017); (4) Alvarez et al. (1997); (5) Maeda et al. (1999); (6) Landecker & Wielebinski (1970); (7) Turtle & Baldwin (1962); (8) Haslam et al. (1982); (9) Platania et al. (2003); (10) Remazeilles et al. (2015).