PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-12:12:30
G10     251.1          26.6                6.5 +/-    0.94      12.2 +/-    0.94  0.100 / 0.400
G13     53.6           30.3                3.8 +/-    0.51       6.7 +/-    0.51  0.090 / 0.370
G15     82.4           56.3                5.1 +/-    0.49       6.0 +/-    0.49  0.040 / 0.040
G16     297.2          14.5               -1.3 +/-    2.71      -3.3 +/-    2.71  0.050 / 0.040
G20     39.3           52.6                3.1 +/-    0.58       3.8 +/-    0.58  0.030 / 0.040
G21     339.2          62.8                3.7 +/-    0.40       4.1 +/-    0.40  0.050 / 0.050
G26     267.9          15.3                4.7 +/-    2.12      11.5 +/-    2.12  0.050 / 0.050
G29     163.9          46.9                6.6 +/-    0.83       8.7 +/-    0.83  0.040 / 0.050