PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/13-13:43:10
G02     53.0           38.5                3.3 +/-    0.41       5.0 +/-    0.41  0.040 / 0.050
G05     76.9           69.0                3.6 +/-    0.48       3.8 +/-    0.48  0.030 / 0.060
G12     185.6          40.1                4.9 +/-    1.81       7.1 +/-    1.81  0.100 / 0.190
G13     133.1          10.4               -7.0 +/-   14.15     -19.5 +/-   14.15  0.100 / 0.250
G21     266.4          14.3                4.8 +/-    1.10      12.2 +/-    1.10  0.040 / 0.060
G25     239.8          56.1                5.1 +/-    0.66       6.0 +/-    0.66  0.090 / 0.080
G29     324.2          48.4                2.2 +/-    1.21       2.8 +/-    1.21  0.020 / 0.030