PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/15-02:58:10
G02     47.6           42.2                6.7 +/-    0.92       9.3 +/-    0.92  0.040 / 0.050
G05     91.7           68.8                7.8 +/-    0.89       8.3 +/-    0.89  0.040 / 0.050
G12     190.9          51.9               10.1 +/-    0.60      12.5 +/-    0.60  0.030 / 0.050
G25     263.7          58.8                8.5 +/-    2.40       9.7 +/-    2.40  0.030 / 0.050
G29     321.5          45.0                7.0 +/-    0.82       9.5 +/-    0.82  0.020 / 0.020