PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-20:57:50
G02     34.1           54.6               10.1 +/-    0.56      12.1 +/-    0.56  0.030 / 0.050
G05     133.8          64.3               11.9 +/-    0.76      13.0 +/-    0.76  0.030 / 0.040
G06     55.7           12.4                8.1 +/-    1.72      21.4 +/-    1.72  0.040 / 0.040
G12     190.3          62.6               12.2 +/-    1.17      13.5 +/-    1.17  0.040 / 0.050
G19     101.2          10.5               10.2 +/-    1.74      28.2 +/-    1.74  0.050 / 0.050
G25     292.5          55.3               11.0 +/-    0.67      13.0 +/-    0.67  0.040 / 0.060
G29     308.5          28.7                8.9 +/-    1.58      16.1 +/-    1.58  0.040 / 0.060