PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-12:42:30
G07     332.2          57.7                6.1 +/-    0.72       7.1 +/-    0.72  0.070 / 0.100
G08     99.3           51.7                7.7 +/-    0.69       9.5 +/-    0.69  0.070 / 0.090
G09     187.4          72.8                7.9 +/-    0.26       8.2 +/-    0.26  0.070 / 0.110
G11     145.7          13.2                6.2 +/-    1.66      16.2 +/-    1.66  0.070 / 0.090
G23     155.0          40.5                7.0 +/-    0.54      10.1 +/-    0.54  0.040 / 0.030
G27     55.5           31.9                5.8 +/-    1.45       9.7 +/-    1.45  0.030 / 0.030
G28     237.0          29.2                6.9 +/-    1.64      12.3 +/-    1.64  0.050 / 0.070
G30     301.3          34.3                4.9 +/-    1.47       7.9 +/-    1.47  0.040 / 0.070