PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-21:12:30
G02     33.7           55.0               11.6 +/-    0.60      13.8 +/-    0.60  0.030 / 0.030
G05     134.8          63.9               14.6 +/-    0.58      16.1 +/-    0.58  0.040 / 0.040
G06     55.4           12.8               10.8 +/-    2.84      28.3 +/-    2.84  0.090 / 0.140
G12     191.0          63.4               12.7 +/-    0.66      14.0 +/-    0.66  0.120 / 0.130
G19     100.7          10.8               13.2 +/-    1.19      36.2 +/-    1.19  0.080 / 0.050
G25     293.5          54.9               11.3 +/-    1.98      13.4 +/-    1.98  0.040 / 0.050
G29     308.1          28.3                9.9 +/-    1.31      18.0 +/-    1.31  0.030 / 0.030