PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/25-10:28:10
G07     331.3          57.9                5.2 +/-    0.58       6.0 +/-    0.58  0.200 / 0.270
G08     112.5          50.2                6.9 +/-    0.38       8.7 +/-    0.38  0.250 / 0.420
G09     205.2          79.1                6.9 +/-    0.28       7.0 +/-    0.28  0.040 / 0.050
G11     148.9          10.9               -0.2 +/-   14.79      -0.6 +/-   14.79  0.050 / 0.050
G16     45.5           10.6                2.2 +/-    2.25       6.0 +/-    2.25  0.070 / 0.080
G23     152.2          42.8                6.1 +/-    0.83       8.5 +/-    0.83  0.070 / 0.090
G27     60.9           34.3                5.3 +/-    1.18       8.6 +/-    1.18  0.030 / 0.030
G28     232.1          19.8                6.2 +/-    1.43      13.8 +/-    1.43  0.030 / 0.020
G30     298.5          32.8                5.0 +/-    1.86       8.2 +/-    1.86  0.180 / 0.370