PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-12:43:00
G02     201.6          15.8                3.7 +/-    1.92       8.9 +/-    1.92  0.090 / 0.210
G06     169.9          53.3                5.9 +/-    1.19       7.1 +/-    1.19  0.090 / 0.190
G13     227.8          14.0                5.0 +/-    1.93      12.7 +/-    1.93  0.090 / 0.120
G17     22.5           59.6                3.4 +/-    0.49       3.9 +/-    0.49  0.080 / 0.110
G19     303.2          69.6                3.3 +/-    0.35       3.5 +/-    0.35  0.170 / 0.430
G24     309.4          30.8                2.9 +/-    2.22       4.9 +/-    2.22  0.190 / 0.450
G28     85.7           41.3                4.4 +/-    0.63       6.2 +/-    0.63  0.040 / 0.050
G30     157.5          17.3                4.4 +/-    1.01      10.4 +/-    1.01  0.040 / 0.060