PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-18:27:30
G02     217.5          59.7               12.1 +/-    0.79      13.8 +/-    0.79  0.040 / 0.080
G06     53.4           71.5               11.5 +/-    0.97      12.0 +/-    0.97  0.040 / 0.080
G12     320.0          40.5               10.2 +/-    0.98      14.8 +/-    0.98  0.080 / 0.090
G17     58.4           31.5                9.3 +/-    0.77      15.8 +/-    0.77  0.070 / 0.110
G19     37.4           50.6                9.5 +/-    0.43      11.9 +/-    0.43  0.040 / 0.060
G24     262.0          41.5               12.1 +/-    1.35      17.2 +/-    1.35  0.040 / 0.060
G28     123.4          12.8               12.1 +/-    1.78      31.7 +/-    1.78  0.140 / 0.460