PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/18-08:13:00
G05     48.8           16.3                1.1 +/-    1.43       2.7 +/-    1.43  0.360 / 0.480
G10     235.5          11.1              -10.6 +/-   25.81     -29.0 +/-   25.81  0.180 / 0.360
G13     77.9           36.8                7.5 +/-    0.70      11.5 +/-    0.70  0.040 / 0.030
G15     123.7          51.7                7.7 +/-    0.83       9.5 +/-    0.83  0.030 / 0.040
G16     315.5          11.7                4.3 +/-    3.66      11.6 +/-    3.66  0.110 / 0.090
G20     353.0          76.9                4.9 +/-    0.38       5.0 +/-    0.38  0.080 / 0.060
G21     312.9          47.2                4.3 +/-    1.09       5.7 +/-    1.09  0.140 / 0.300
G25     200.8          12.1                3.8 +/-    2.69      10.2 +/-    2.69  0.130 / 0.260
G26     288.0          20.7                6.2 +/-    0.63      13.5 +/-    0.63  0.050 / 0.080
G29     154.3          72.9                7.3 +/-    0.69       7.6 +/-    0.69  0.060 / 0.080