PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/26-19:42:40
G07     325.5          54.9               15.1 +/-    0.75      18.0 +/-    0.75  0.050 / 0.080
G08     113.7          50.5               16.8 +/-    0.93      21.1 +/-    0.93  0.040 / 0.080
G09     207.1          78.9               14.2 +/-    0.75      14.4 +/-    0.75  0.040 / 0.080
G16     45.5           10.5                8.8 +/-    2.04      24.4 +/-    2.04  0.050 / 0.070
G23     152.7          43.5               15.2 +/-    0.56      20.9 +/-    0.56  0.030 / 0.030
G27     59.3           33.5               12.5 +/-    0.97      20.5 +/-    0.97  0.040 / 0.030
G28     233.9          26.2               19.2 +/-    1.21      36.6 +/-    1.21  0.030 / 0.050
G30     299.7          34.2               15.2 +/-    0.62      24.4 +/-    0.62  0.050 / 0.060