PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-09:42:50
G01     96.7           30.0                5.6 +/-    0.92       9.8 +/-    0.92  0.040 / 0.040
G07     120.1          49.5                7.0 +/-    0.83       8.9 +/-    0.83  0.050 / 0.040
G08     41.7           10.3                3.4 +/-    2.44       9.4 +/-    2.44  0.030 / 0.020
G11     73.9           41.1                4.8 +/-    0.69       6.8 +/-    0.69  0.030 / 0.040
G13     300.4          34.2                4.0 +/-    0.85       6.4 +/-    0.85  0.100 / 0.100
G17     210.1          49.8                6.6 +/-    0.75       8.3 +/-    0.75  0.100 / 0.110
G18     68.1           24.0                4.5 +/-    1.05       8.9 +/-    1.05  0.080 / 0.110
G19     212.7          18.0                4.3 +/-    1.56       9.9 +/-    1.56  0.080 / 0.120
G28     335.5          61.8                4.4 +/-    0.53       4.9 +/-    0.53  0.070 / 0.110
G30     70.9           80.3                4.7 +/-    0.82       4.8 +/-    0.82  0.060 / 0.120