PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/26-23:27:30
G07     316.5          50.9                7.0 +/-    1.02       8.7 +/-    1.02  0.210 / 0.540
G08     119.7          46.3               11.0 +/-    1.10      14.6 +/-    1.10  0.170 / 0.490
G09     257.3          82.6               10.1 +/-    0.73      10.2 +/-    0.73  0.040 / 0.060
G16     43.2           18.6                4.6 +/-    2.73      10.5 +/-    2.73  0.050 / 0.060
G23     149.9          54.2                8.4 +/-    0.47      10.1 +/-    0.47  0.050 / 0.050
G27     67.5           35.8                6.6 +/-    1.32      10.4 +/-    1.32  0.050 / 0.050
G28     229.0          20.3                8.7 +/-    3.30      18.9 +/-    3.30  0.230 / 0.290
G30     294.1          30.2                9.2 +/-    2.36      16.1 +/-    2.36  0.130 / 0.240