PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/15-11:42:40
G02     34.6           53.4                4.2 +/-    1.19       5.1 +/-    1.19  0.040 / 0.030
G05     145.8          61.2                7.5 +/-    0.88       8.5 +/-    0.88  0.030 / 0.030
G06     53.6           14.7                2.2 +/-    1.89       5.5 +/-    1.89  0.060 / 0.050
G12     190.1          65.3                6.2 +/-    0.51       6.7 +/-    0.51  0.040 / 0.050
G25     296.6          53.4                4.5 +/-    2.41       5.5 +/-    2.41  0.030 / 0.040
G29     306.8          27.3                4.8 +/-    1.63       8.9 +/-    1.63  0.020 / 0.030