PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-03:42:50
G02     38.7           50.6                5.7 +/-    1.15       7.1 +/-    1.15  0.030 / 0.040
G05     125.8          65.8                7.2 +/-    0.31       7.8 +/-    0.31  0.030 / 0.040
G06     56.3           12.8                3.5 +/-    1.73       9.1 +/-    1.73  0.030 / 0.040
G12     195.7          63.3                7.4 +/-    0.56       8.2 +/-    0.56  0.030 / 0.030
G25     291.0          55.2                6.1 +/-    0.76       7.3 +/-    0.76  0.040 / 0.050
G29     310.4          31.1                6.0 +/-    1.02      10.3 +/-    1.02  0.040 / 0.050