PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-11:42:40
G05     49.5           15.0                2.2 +/-    2.44       5.6 +/-    2.44  0.080 / 0.160
G10     237.0          12.8                1.5 +/-    5.73       3.8 +/-    5.73  0.120 / 0.200
G13     75.1           36.9                5.2 +/-    0.55       8.0 +/-    0.55  0.380 / 0.740
G15     119.3          53.1                7.1 +/-    0.77       8.7 +/-    0.77  0.250 / 0.600
G16     314.9          11.5                0.7 +/-    8.09       1.8 +/-    8.09  0.040 / 0.050
G20     20.9           69.6                2.9 +/-    0.60       3.1 +/-    0.60  0.060 / 0.060
G21     317.0          50.4                2.2 +/-    0.77       2.8 +/-    0.77  0.050 / 0.040
G26     286.9          20.1                2.3 +/-    2.27       5.0 +/-    2.27  0.050 / 0.040
G29     155.1          68.3                6.0 +/-    0.72       6.4 +/-    0.72  0.170 / 0.170