PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-10:57:40
G05     49.5           14.8                2.6 +/-    2.43       6.6 +/-    2.43  0.070 / 0.200
G10     237.0          12.8                2.5 +/-    3.71       6.4 +/-    3.71  0.120 / 0.180
G13     75.1           36.9                6.2 +/-    0.68       9.6 +/-    0.68  0.050 / 0.040
G15     119.3          53.1                7.6 +/-    0.89       9.3 +/-    0.89  0.040 / 0.030
G16     314.6          11.8                2.5 +/-   13.53       6.7 +/-   13.53  0.040 / 0.060
G20     19.8           70.0                4.7 +/-    0.60       4.9 +/-    0.60  0.040 / 0.050
G21     316.5          50.0                3.7 +/-    0.81       4.7 +/-    0.81  0.210 / 0.380
G26     286.5          20.2                5.4 +/-    1.52      11.9 +/-    1.52  0.270 / 0.250
G29     155.4          68.8                7.3 +/-    0.51       7.8 +/-    0.51  0.140 / 0.180