PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/08-00:12:30
G03     233.7          66.7                5.4 +/-    0.70       5.8 +/-    0.70  0.050 / 0.050
G09     304.7          19.7                3.8 +/-    1.99       8.5 +/-    1.99  0.040 / 0.040
G14     101.9          12.5                5.7 +/-    2.18      15.1 +/-    2.18  0.030 / 0.030
G16     131.2          60.2                8.2 +/-    0.73       9.3 +/-    0.73  0.030 / 0.030
G22     194.5          53.7                6.9 +/-    0.83       8.4 +/-    0.83  0.390 / 0.230
G23     320.4          50.2                5.7 +/-    0.93       7.2 +/-    0.93  0.380 / 0.390
G26     68.2           52.3                4.9 +/-    0.61       6.1 +/-    0.61  0.100 / 0.210
G31     52.7           19.9                3.4 +/-    4.09       7.4 +/-    4.09  0.100 / 0.200