PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/18-12:42:40
G02     37.8           51.3                3.7 +/-    1.06       4.6 +/-    1.06  0.050 / 0.070
G05     132.8          66.5                5.9 +/-    0.69       6.4 +/-    0.69  0.060 / 0.100
G06     57.2           11.5                2.8 +/-    2.84       7.7 +/-    2.84  0.040 / 0.030
G12     192.2          60.5                5.6 +/-    0.55       6.3 +/-    0.55  0.040 / 0.030
G25     278.0          60.1               -0.2 +/-    1.33      -0.2 +/-    1.33  0.030 / 0.030
G29     312.2          33.4                2.2 +/-    1.16       3.5 +/-    1.16  0.030 / 0.030