PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/08-04:58:10
G02     60.0           31.6                2.6 +/-    1.82       4.4 +/-    1.82  0.100 / 0.090
G05     57.9           60.1                5.5 +/-    0.43       6.2 +/-    0.43  0.060 / 0.090
G12     185.6          33.9                5.0 +/-    1.60       8.1 +/-    1.60  0.180 / 0.440
G13     129.2          14.7                7.0 +/-    3.25      17.6 +/-    3.25  0.270 / 0.360
G15     163.4          12.0                2.7 +/-    3.76       7.2 +/-    3.76  0.030 / 0.030
G20     215.0          35.3                6.9 +/-    1.02      10.9 +/-    1.02  0.040 / 0.030
G21     270.8          17.2                7.2 +/-    1.38      17.0 +/-    1.38  0.080 / 0.070
G25     239.5          52.5                7.5 +/-    2.70       9.2 +/-    2.70  0.100 / 0.110
G29     327.8          53.8                4.6 +/-    0.80       5.6 +/-    0.80  0.110 / 0.140