TABLE 1

Parameters to be Disseminated for RVIM

Type	Parameters	Number of parameters	Total
Slant ionospheric corrections	a₀, a₁, a₂, a₃	4
	Residual of grid points	N_sat * N_grid	N_sat * N_grid + 9
	Latitude and longitude of the central point	2
	Spatial resolution of latitude and longitude	2
	Reference time	1

N_sat and N_grid are the number of available satellites and grid points in the selected region, respectively.