PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-13:42:40
G10     251.6          28.2                4.4 +/-    1.65       8.1 +/-    1.65  0.050 / 0.050
G13     52.3           28.8                3.8 +/-    0.99       6.8 +/-    0.99  0.040 / 0.040
G15     85.3           57.8                4.5 +/-    0.75       5.2 +/-    0.75  0.090 / 0.390
G16     296.5          14.8                2.4 +/-    2.71       6.1 +/-    2.71  0.080 / 0.440
G20     271.7          51.7                6.1 +/-    2.71       7.5 +/-    2.71  0.080 / 0.130
G21     341.8          63.5                3.5 +/-    0.92       3.8 +/-    0.92  0.060 / 0.140
G26     270.1          14.8                3.5 +/-    1.26       8.7 +/-    1.26  0.080 / 0.140
G29     163.4          46.7                5.6 +/-    0.49       7.3 +/-    0.49  0.070 / 0.090