PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-08:13:10
G07     37.2           69.4                5.5 +/-    0.48       5.8 +/-    0.48  0.040 / 0.040
G08     54.1           42.1                4.1 +/-    1.11       5.8 +/-    1.11  0.050 / 0.040
G09     174.3          37.2                6.9 +/-    0.92      10.5 +/-    0.92  0.070 / 0.140
G11     122.8          32.2                6.2 +/-    1.49      10.4 +/-    1.49  0.060 / 0.140
G17     198.7          10.8               -7.2 +/-   13.24     -19.8 +/-   13.24  0.030 / 0.040
G18     107.6          13.7                5.1 +/-    1.88      13.0 +/-    1.88  0.030 / 0.030
G23     161.1          14.2                6.2 +/-    1.84      15.8 +/-    1.84  0.090 / 0.270
G27     38.6           13.0                1.8 +/-    1.39       4.6 +/-    1.39  0.100 / 0.340
G28     266.5          48.8                6.2 +/-    1.16       7.9 +/-    1.16  0.190 / 0.450
G30     324.7          54.4                4.6 +/-    0.61       5.6 +/-    0.61  0.190 / 0.380