PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-15:28:10
G07     333.6          58.8                8.3 +/-    1.39       9.5 +/-    1.39  0.200 / 0.340
G08     109.2          49.5               10.9 +/-    0.74      13.8 +/-    0.74  0.100 / 0.280
G09     215.5          80.5                9.8 +/-    0.88       9.9 +/-    0.88  0.030 / 0.050
G11     148.7          10.3               -5.0 +/-   15.58     -13.9 +/-   15.58  0.030 / 0.050
G16     44.8           14.1                7.9 +/-    1.67      20.0 +/-    1.67  0.040 / 0.040
G23     152.8          47.5               11.3 +/-    1.21      14.7 +/-    1.21  0.040 / 0.040
G27     63.1           35.3                9.4 +/-    0.75      14.9 +/-    0.75  0.070 / 0.100
G28     231.5          19.9               10.2 +/-    3.56      22.4 +/-    3.56  0.050 / 0.090
G30     298.3          33.3                7.4 +/-    1.54      12.1 +/-    1.54  0.050 / 0.080