PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/11-06:42:40
G02     56.5           34.4                1.9 +/-    1.23       3.0 +/-    1.23  0.030 / 0.030
G05     65.6           63.9                3.9 +/-    0.46       4.2 +/-    0.46  0.030 / 0.030
G12     187.1          39.4                6.6 +/-    1.81       9.7 +/-    1.81  0.060 / 0.070
G13     132.9          11.5                6.5 +/-    2.66      17.6 +/-    2.66  0.060 / 0.070
G20     208.3          47.2                6.3 +/-    0.41       8.2 +/-    0.41  0.040 / 0.060
G21     267.4          15.1                3.8 +/-    3.11       9.5 +/-    3.11  0.040 / 0.060
G25     247.4          55.2                4.4 +/-    1.33       5.3 +/-    1.33  0.180 / 0.410
G29     325.3          50.2                2.4 +/-    1.00       3.0 +/-    1.00  0.160 / 0.240