PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-02:13:00
G01     101.0          28.4                6.0 +/-    1.19      10.8 +/-    1.19  0.030 / 0.040
G07     115.0          53.7                4.9 +/-    0.48       5.9 +/-    0.48  0.030 / 0.040
G08     41.9           16.6                2.9 +/-    1.43       7.0 +/-    1.43  0.070 / 0.110
G11     83.4           43.0                5.9 +/-    0.91       8.2 +/-    0.91  0.070 / 0.100
G13     305.4          31.2                4.4 +/-    1.56       7.5 +/-    1.56  0.030 / 0.040
G17     208.8          43.3                6.4 +/-    0.99       8.9 +/-    0.99  0.020 / 0.040
G19     210.8          18.9                4.3 +/-    2.33       9.7 +/-    2.33  0.040 / 0.060
G28     331.3          61.8                3.0 +/-    0.58       3.3 +/-    0.58  0.040 / 0.050
G30     73.4           77.8                3.4 +/-    0.74       3.5 +/-    0.74  0.210 / 0.260