PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-12:42:50
G01     99.0           29.1                4.6 +/-    0.98       8.1 +/-    0.98  0.030 / 0.030
G07     117.4          52.0                5.5 +/-    0.51       6.8 +/-    0.51  0.020 / 0.020
G08     41.6           12.2                4.4 +/-    2.12      11.8 +/-    2.12  0.030 / 0.030
G11     76.9           41.5                4.4 +/-    1.16       6.2 +/-    1.16  0.030 / 0.030
G13     302.6          33.2                2.5 +/-    2.48       4.2 +/-    2.48  0.040 / 0.040
G17     209.0          47.0                5.9 +/-    0.47       7.8 +/-    0.47  0.050 / 0.040
G18     71.3           24.5                4.4 +/-    1.93       8.8 +/-    1.93  0.100 / 0.110
G19     211.9          16.8                4.7 +/-    1.63      11.2 +/-    1.63  0.080 / 0.100
G28     333.0          61.8                3.5 +/-    0.79       3.9 +/-    0.79  0.050 / 0.110
G30     57.8           80.4                4.5 +/-    1.25       4.6 +/-    1.25  0.060 / 0.140