PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-07:57:40
G07     331.1          57.2                2.7 +/-    0.86       3.1 +/-    0.86  0.090 / 0.210
G08     101.5          50.4                3.5 +/-    1.21       4.4 +/-    1.21  0.130 / 0.210
G09     190.7          75.9                2.6 +/-    0.35       2.6 +/-    0.35  0.030 / 0.030
G11     146.4          11.0                2.5 +/-   14.61       6.9 +/-   14.61  0.040 / 0.030
G16     45.4           13.3                0.1 +/-    2.08       0.3 +/-    2.08  0.040 / 0.040
G23     154.8          47.1                7.5 +/-    1.60       9.8 +/-    1.60  0.040 / 0.050
G27     57.4           32.4                2.1 +/-    0.62       3.5 +/-    0.62  0.030 / 0.040
G28     235.1          27.5                7.0 +/-    1.39      12.9 +/-    1.39  0.030 / 0.050
G30     298.7          32.0                2.1 +/-    2.34       3.5 +/-    2.34  0.090 / 0.180