PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-07:13:00
G01     93.8           30.8                7.0 +/-    0.60      12.0 +/-    0.60  0.040 / 0.050
G07     122.5          47.3                8.0 +/-    1.14      10.5 +/-    1.14  0.040 / 0.050
G11     72.6           40.2                5.6 +/-    0.58       8.1 +/-    0.58  0.050 / 0.050
G13     299.6          33.8                5.5 +/-    1.44       8.9 +/-    1.44  0.040 / 0.060
G17     212.1          52.0                8.1 +/-    0.61      10.0 +/-    0.61  0.030 / 0.050
G19     213.1          25.5                9.4 +/-    2.12      18.1 +/-    2.12  0.040 / 0.070
G28     344.2          61.8                4.2 +/-    0.84       4.7 +/-    0.84  0.070 / 0.130
G30     91.7           77.4                6.4 +/-    0.70       6.5 +/-    0.70  0.060 / 0.110