PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/18-20:12:30
G07     323.9          54.2               16.2 +/-    0.33      19.4 +/-    0.33  0.050 / 0.070
G08     114.9          49.9               18.1 +/-    0.53      22.9 +/-    0.53  0.050 / 0.050
G09     212.7          80.0               16.0 +/-    0.65      16.2 +/-    0.65  0.040 / 0.050
G16     45.1           11.7               11.8 +/-    2.74      31.8 +/-    2.74  0.040 / 0.050
G23     152.3          45.3               18.0 +/-    0.94      24.1 +/-    0.94  0.170 / 0.330
G27     60.6           33.9               15.1 +/-    1.59      24.4 +/-    1.59  0.100 / 0.260
G28     233.1          25.3               20.8 +/-    2.63      40.4 +/-    2.63  0.260 / 0.230
G30     298.9          33.7               12.6 +/-    1.66      20.5 +/-    1.66  0.220 / 0.380