PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-13:12:40
G10     249.0          24.8                4.1 +/-    1.19       8.0 +/-    1.19  0.040 / 0.050
G13     56.0           31.8                1.8 +/-    1.75       3.1 +/-    1.75  0.030 / 0.040
G15     87.3           56.8                3.6 +/-    0.65       4.2 +/-    0.65  0.180 / 0.290
G16     300.2          14.3                3.8 +/-    1.37       9.5 +/-    1.37  0.210 / 0.270
G18     268.9          57.1                4.0 +/-    1.71       4.7 +/-    1.71  0.030 / 0.040
G20     38.0           54.0                1.6 +/-    0.67       1.9 +/-    0.67  0.040 / 0.050
G21     337.0          61.7                1.1 +/-    0.82       1.3 +/-    0.82  0.090 / 0.100
G26     270.8          16.1                4.3 +/-    1.08      10.4 +/-    1.08  0.070 / 0.130
G29     162.8          49.0                4.0 +/-    0.47       5.2 +/-    0.47  0.090 / 0.320