PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-16:12:30
G07     333.5          58.7                8.9 +/-    0.97      10.2 +/-    0.97  0.040 / 0.050
G08     109.3          49.2                9.8 +/-    0.73      12.5 +/-    0.73  0.030 / 0.050
G09     217.7          80.8               10.3 +/-    1.16      10.5 +/-    1.16  0.110 / 0.330
G11     148.9          10.0               -7.1 +/-   13.70     -19.8 +/-   13.70  0.100 / 0.230
G16     44.6           14.9                7.8 +/-    1.46      19.5 +/-    1.46  0.040 / 0.060
G23     152.8          48.5               10.7 +/-    0.94      13.7 +/-    0.94  0.050 / 0.060
G27     63.7           35.6                8.5 +/-    0.41      13.3 +/-    0.41  0.050 / 0.070
G28     231.3          19.8               10.5 +/-    3.17      23.3 +/-    3.17  0.040 / 0.080
G30     297.7          32.6                8.6 +/-    1.29      14.3 +/-    1.29  0.150 / 0.370