PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/26-08:42:50
G02     35.1           54.0                3.4 +/-    0.46       4.1 +/-    0.46  0.030 / 0.030
G05     138.2          62.0                5.6 +/-    0.59       6.2 +/-    0.59  0.030 / 0.040
G06     52.6           19.3                0.8 +/-    1.00       1.7 +/-    1.00  0.030 / 0.040
G12     204.3          69.3                4.2 +/-    0.68       4.5 +/-    0.68  0.030 / 0.040
G20     200.3          22.0                4.2 +/-    2.69       8.8 +/-    2.69  0.040 / 0.050
G25     298.2          52.7                3.7 +/-    0.71       4.6 +/-    0.71  0.050 / 0.060
G29     308.1          29.6                2.2 +/-    1.00       3.8 +/-    1.00  0.070 / 0.200