PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-06:27:30
G01     228.3          19.0                7.0 +/-    4.05      15.7 +/-    4.05  0.040 / 0.030
G03     295.5          64.5                4.7 +/-    1.04       5.1 +/-    1.04  0.050 / 0.030
G14     83.6           27.0                2.9 +/-    2.68       5.3 +/-    2.68  0.210 / 0.400
G16     145.4          43.7                6.2 +/-    1.01       8.6 +/-    1.01  0.340 / 0.430
G22     226.4          72.6                5.3 +/-    0.40       5.6 +/-    0.40  0.040 / 0.040
G23     305.2          35.2                6.1 +/-    1.37       9.7 +/-    1.37  0.040 / 0.030
G26     98.4           53.1                5.8 +/-    0.61       7.1 +/-    0.61  0.050 / 0.100
G31     44.9           32.4                2.4 +/-    0.73       3.9 +/-    0.73  0.050 / 0.100