PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/09-16:57:40
G03     184.4          10.5                9.3 +/-    6.44      25.6 +/-    6.44  0.080 / 0.170
G07     304.5          47.4                9.7 +/-    3.07      12.6 +/-    3.07  0.070 / 0.170
G08     133.1          35.6               12.9 +/-    0.77      20.2 +/-    0.77  0.050 / 0.030
G09     316.2          70.9                9.9 +/-    0.98      10.4 +/-    0.98  0.040 / 0.030
G16     42.0           34.2                6.7 +/-    1.32      10.9 +/-    1.32  0.050 / 0.050
G23     136.4          71.3              -16.1 +/-    0.84     -16.9 +/-    0.84  0.060 / 0.070
G27     90.7           36.8               12.1 +/-    0.59      18.6 +/-    0.59  0.050 / 0.030
G30     281.1          19.1                8.9 +/-    1.80      20.0 +/-    1.80  0.040 / 0.030