PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-00:12:30
G02     214.1          59.6               14.8 +/-    0.47      16.9 +/-    0.47  0.050 / 0.100
G06     63.0           75.8               11.5 +/-    0.57      11.8 +/-    0.57  0.050 / 0.110
G12     317.9          34.2                9.6 +/-    1.56      15.5 +/-    1.56  0.050 / 0.060
G17     53.1           37.2               10.0 +/-    0.43      15.3 +/-    0.43  0.030 / 0.050
G19     36.1           51.1               10.5 +/-    0.60      13.1 +/-    0.60  0.130 / 0.270
G24     268.1          41.9               12.3 +/-    1.33      17.3 +/-    1.33  0.120 / 0.280
G28     121.5          14.7               15.1 +/-    2.68      37.9 +/-    2.68  0.080 / 0.080