PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/02-13:27:50
G01     99.0           29.2                6.1 +/-    1.07      10.8 +/-    1.07  0.030 / 0.030
G07     117.4          52.1                6.6 +/-    0.59       8.1 +/-    0.59  0.030 / 0.020
G08     41.7           12.7                3.8 +/-    3.10      10.0 +/-    3.10  0.060 / 0.130
G11     77.2           41.7                6.9 +/-    0.69       9.8 +/-    0.69  0.060 / 0.120
G13     302.6          33.1                6.1 +/-    1.12      10.1 +/-    1.12  0.050 / 0.090
G17     209.2          46.5                6.7 +/-    1.20       8.9 +/-    1.20  0.050 / 0.100
G18     71.5           24.5                6.3 +/-    0.72      12.4 +/-    0.72  0.040 / 0.050
G19     211.8          17.1                4.7 +/-    1.92      11.1 +/-    1.92  0.040 / 0.050
G28     333.1          61.8                4.7 +/-    0.53       5.3 +/-    0.53  0.030 / 0.040
G30     59.6           80.3                5.1 +/-    0.60       5.1 +/-    0.60  0.030 / 0.040