PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/26-12:12:30
G07     323.0          55.0                2.5 +/-    0.92       3.0 +/-    0.92  0.040 / 0.050
G08     119.9          46.4                6.4 +/-    1.13       8.5 +/-    1.13  0.030 / 0.050
G09     253.5          82.8                2.2 +/-    1.10       2.2 +/-    1.10  0.210 / 0.470
G16     43.6           16.9                2.3 +/-    1.04       5.5 +/-    1.04  0.190 / 0.420
G23     149.3          50.9                5.8 +/-    1.50       7.2 +/-    1.50  0.050 / 0.070
G27     69.1           36.6                3.4 +/-    0.57       5.3 +/-    0.57  0.060 / 0.060
G28     228.1          14.7                4.0 +/-    2.94       9.9 +/-    2.94  0.030 / 0.060
G30     293.9          29.8                4.1 +/-    1.11       7.3 +/-    1.11  0.040 / 0.050