PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-12:13:10
G07     332.5          57.7                3.5 +/-    1.41       4.1 +/-    1.41  0.110 / 0.110
G08     102.3          50.1                3.6 +/-    1.76       4.5 +/-    1.76  0.090 / 0.120
G09     191.0          76.5               -7.4 +/-    8.34      -7.6 +/-    8.34  0.030 / 0.060
G11     145.8          10.7               -3.1 +/-   16.48      -8.5 +/-   16.48  0.040 / 0.050
G16     45.5           11.5                3.8 +/-    3.18      10.4 +/-    3.18  0.140 / 0.340
G23     154.2          47.5                6.4 +/-    1.35       8.3 +/-    1.35  0.180 / 0.340
G27     58.2           32.7                4.7 +/-    0.44       7.9 +/-    0.44  0.030 / 0.060
G28     234.5          26.5              -30.3 +/-   65.56     -57.2 +/-   65.56  0.030 / 0.070
G30     297.4          30.4                1.6 +/-    1.84       2.7 +/-    1.84  0.050 / 0.090