PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/14-06:27:50
G02     55.6           35.3                3.3 +/-    2.18       5.3 +/-    2.18  0.030 / 0.030
G05     68.0           64.7                4.2 +/-    0.24       4.6 +/-    0.24  0.020 / 0.030
G12     187.4          40.7                5.5 +/-    0.75       8.0 +/-    0.75  0.050 / 0.060
G13     133.8          10.7                2.2 +/-   16.93       5.9 +/-   16.93  0.050 / 0.080
G20     208.8          43.2                6.7 +/-    1.14       9.3 +/-    1.14  0.130 / 0.520
G21     266.4          14.3                2.7 +/-    3.46       6.9 +/-    3.46  0.110 / 0.480
G25     249.6          55.7                4.5 +/-    2.77       5.3 +/-    2.77  0.070 / 0.070
G29     324.5          49.0                2.5 +/-    0.63       3.1 +/-    0.63  0.050 / 0.080