PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-12:42:30
G02     204.0          32.6                5.2 +/-    2.27       8.6 +/-    2.27  0.050 / 0.120
G06     155.7          69.8                4.5 +/-    0.74       4.7 +/-    0.74  0.040 / 0.110
G12     307.2          16.0                1.6 +/-    2.84       3.9 +/-    2.84  0.070 / 0.090
G17     33.7           50.9                2.6 +/-    0.43       3.2 +/-    0.43  0.060 / 0.090
G19     5.7            64.3                3.2 +/-    0.43       3.5 +/-    0.43  0.040 / 0.050
G24     298.4          37.1                5.2 +/-    1.16       7.9 +/-    1.16  0.040 / 0.050
G28     98.7           37.2                5.8 +/-    0.60       8.9 +/-    0.60  0.150 / 0.580