PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-02:42:30
G02     30.7           57.2                6.4 +/-    1.10       7.4 +/-    1.10  0.030 / 0.030
G05     142.4          59.5               10.3 +/-    1.03      11.8 +/-    1.03  0.030 / 0.020
G06     50.5           21.7                4.9 +/-    2.64      10.3 +/-    2.64  0.050 / 0.050
G12     212.8          73.4                7.9 +/-    0.70       8.2 +/-    0.70  0.090 / 0.050
G19     97.0           11.6                8.1 +/-    1.78      21.9 +/-    1.78  0.130 / 0.200
G25     300.6          52.2                8.2 +/-    1.88      10.1 +/-    1.88  0.170 / 0.210
G29     307.1          29.8                6.9 +/-    0.57      12.1 +/-    0.57  0.030 / 0.030