PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-10:42:40
G07     44.0           68.7                5.5 +/-    0.42       5.9 +/-    0.42  0.030 / 0.040
G08     53.7           41.6                4.6 +/-    0.47       6.5 +/-    0.47  0.030 / 0.040
G09     176.5          39.3                6.9 +/-    0.86      10.2 +/-    0.86  0.030 / 0.050
G11     121.1          31.4                4.8 +/-    0.63       8.2 +/-    0.63  0.030 / 0.050
G17     198.7          12.3                3.5 +/-    3.12       9.2 +/-    3.12  0.040 / 0.080
G23     161.1          14.0                5.8 +/-    1.55      14.8 +/-    1.55  0.060 / 0.090
G27     37.8           10.2                4.0 +/-    1.93      11.0 +/-    1.93  0.160 / 0.330
G28     269.3          50.3                5.6 +/-    1.10       7.1 +/-    1.10  0.080 / 0.270
G30     325.9          54.9                5.1 +/-    0.71       6.1 +/-    0.71  0.040 / 0.050