PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-02:43:10
G07     321.8          53.4                3.3 +/-    1.59       4.0 +/-    1.59  0.090 / 0.270
G08     112.2          48.5                7.7 +/-    0.78      10.0 +/-    0.78  0.080 / 0.330
G09     222.9          81.7                4.2 +/-    0.56       4.2 +/-    0.56  0.030 / 0.050
G16     43.8           17.8                2.0 +/-    0.79       4.6 +/-    0.79  0.030 / 0.050
G23     152.2          51.7                6.6 +/-    0.99       8.2 +/-    0.99  0.030 / 0.060
G27     63.1           34.6                3.4 +/-    0.76       5.4 +/-    0.76  0.040 / 0.060
G28     231.3          23.4                7.2 +/-    1.15      14.7 +/-    1.15  0.060 / 0.170
G30     295.9          30.7                4.6 +/-    1.08       7.9 +/-    1.08  0.080 / 0.200