PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-17:58:10
G07     53.8           67.4               11.4 +/-    0.84      12.3 +/-    0.84  0.030 / 0.030
G08     54.8           43.1               11.6 +/-    0.90      16.1 +/-    0.90  0.040 / 0.030
G09     179.6          43.3               13.6 +/-    0.84      18.8 +/-    0.84  0.110 / 0.160
G11     122.5          32.9               11.9 +/-    0.87      19.7 +/-    0.87  0.080 / 0.140
G18     106.5          13.9               11.9 +/-    2.03      30.4 +/-    2.03  0.040 / 0.040
G23     160.5          12.7               11.0 +/-    2.10      29.0 +/-    2.10  0.030 / 0.040
G27     38.6           13.0                9.2 +/-    1.22      24.0 +/-    1.22  0.140 / 0.230
G28     264.0          46.1               14.1 +/-    2.94      18.7 +/-    2.94  0.100 / 0.250
G30     328.8          57.7               11.3 +/-    0.55      13.1 +/-    0.55  0.120 / 0.340