PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-02:57:50
G01     69.7           32.8                3.3 +/-    0.68       5.4 +/-    0.68  0.040 / 0.080
G07     138.0          30.2                4.8 +/-    1.61       8.4 +/-    1.61  0.040 / 0.070
G11     54.4           31.6                2.3 +/-    0.36       3.9 +/-    0.36  0.030 / 0.060
G13     274.4          37.1                5.4 +/-    1.03       8.2 +/-    1.03  0.030 / 0.050
G15     301.0          16.0                0.6 +/-    1.74       1.4 +/-    1.74  0.060 / 0.110
G17     235.2          69.1                4.2 +/-    0.82       4.5 +/-    0.82  0.040 / 0.110
G19     225.1          43.6                6.9 +/-    1.59       9.5 +/-    1.59  0.070 / 0.090
G28     22.5           58.8                2.6 +/-    0.41       2.9 +/-    0.41  0.050 / 0.120
G30     136.1          56.9                4.0 +/-    0.58       4.7 +/-    0.58  0.100 / 0.330