PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-02:28:10
G01     92.7           31.2                5.4 +/-    0.45       9.2 +/-    0.45  0.040 / 0.060
G07     123.4          47.5                4.6 +/-    1.05       5.9 +/-    1.05  0.040 / 0.050
G08     42.3           10.5                2.8 +/-    2.79       7.7 +/-    2.79  0.080 / 0.120
G11     73.5           41.5                5.0 +/-    0.81       7.1 +/-    0.81  0.080 / 0.110
G13     297.9          34.6                4.2 +/-    1.68       6.7 +/-    1.68  0.040 / 0.050
G17     213.3          50.8                8.0 +/-    1.09      10.0 +/-    1.09  0.030 / 0.070
G19     213.6          25.7                7.1 +/-    1.54      13.7 +/-    1.54  0.030 / 0.060
G28     346.4          61.8                2.7 +/-    0.46       3.0 +/-    0.46  0.030 / 0.060
G30     103.2          74.0                4.3 +/-    0.79       4.5 +/-    0.79  0.140 / 0.290