PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/30-00:27:40
G02     3.3            73.8                7.6 +/-    0.54       7.8 +/-    0.54  0.140 / 0.350
G05     160.4          39.8               11.0 +/-    0.88      16.1 +/-    0.88  0.190 / 0.470
G06     42.1           37.6                6.5 +/-    0.99       9.9 +/-    0.99  0.100 / 0.110
G12     303.1          73.5                7.6 +/-    0.41       7.9 +/-    0.41  0.090 / 0.090
G19     79.9           23.4                8.5 +/-    1.31      17.2 +/-    1.31  0.040 / 0.050
G24     223.3          18.5               10.4 +/-    1.45      23.7 +/-    1.45  0.040 / 0.030
G25     315.6          34.5                7.0 +/-    1.84      11.2 +/-    1.84  0.030 / 0.040
G29     291.5          15.3                7.5 +/-    1.72      18.6 +/-    1.72  0.030 / 0.040