PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-12:43:10
G05     50.0           14.0                2.9 +/-    1.48       7.5 +/-    1.48  0.070 / 0.220
G10     238.1          14.0                3.4 +/-    3.05       8.8 +/-    3.05  0.070 / 0.190
G13     73.1           36.8                5.3 +/-    0.77       8.2 +/-    0.77  0.040 / 0.060
G15     116.5          53.9                9.6 +/-    0.64      11.6 +/-    0.64  0.040 / 0.070
G16     314.0          11.8               -3.7 +/-   13.82     -10.0 +/-   13.82  0.140 / 0.250
G18     249.6          46.8                5.6 +/-    1.87       7.3 +/-    1.87  0.120 / 0.250
G20     24.2           67.4                5.3 +/-    0.70       5.7 +/-    0.70  0.050 / 0.040
G21     319.4          52.0                4.5 +/-    1.04       5.6 +/-    1.04  0.040 / 0.040
G26     285.7          19.8                2.9 +/-    1.65       6.3 +/-    1.65  0.040 / 0.110
G29     156.0          65.8                8.4 +/-    0.94       9.1 +/-    0.94  0.060 / 0.110