PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/05-01:42:20
G02     27.6           60.2                7.8 +/-    0.34       8.8 +/-    0.34  0.030 / 0.040
G05     146.5          56.5               10.2 +/-    0.67      12.0 +/-    0.67  0.030 / 0.040
G06     50.3           20.9                5.0 +/-    1.12      10.8 +/-    1.12  0.040 / 0.050
G12     212.7          75.0                9.6 +/-    0.76       9.9 +/-    0.76  0.030 / 0.050
G19     94.0           15.1                9.4 +/-    0.97      23.4 +/-    0.97  0.040 / 0.080
G25     306.2          47.7                9.3 +/-    1.32      12.1 +/-    1.32  0.060 / 0.080
G29     302.1          22.3                7.4 +/-    1.37      15.4 +/-    1.37  0.030 / 0.050