PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-02:57:10
G02     48.7           41.2                5.3 +/-    0.97       7.6 +/-    0.97  0.040 / 0.050
G05     87.4           68.5                6.8 +/-    1.04       7.3 +/-    1.04  0.040 / 0.030
G12     190.3          50.4                7.2 +/-    0.75       9.1 +/-    0.75  0.040 / 0.040
G25     260.7          58.6                5.6 +/-    0.88       6.4 +/-    0.88  0.040 / 0.040
G29     322.4          46.1                6.9 +/-    0.81       9.1 +/-    0.81  0.030 / 0.030