PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/29-12:58:00
G01     86.0           32.4                5.3 +/-    0.58       8.8 +/-    0.58  0.100 / 0.000
G07     128.5          39.9                6.4 +/-    0.36       9.3 +/-    0.36  0.130 / 0.440
G11     63.7           36.1                4.8 +/-    0.62       7.4 +/-    0.62  0.030 / 0.030
G13     293.0          35.6                6.0 +/-    0.96       9.5 +/-    0.96  0.040 / 0.030
G15     314.7          10.2               -9.4 +/-    8.95     -26.1 +/-    8.95  0.040 / 0.060
G17     217.0          59.6                8.8 +/-    0.42      10.1 +/-    0.42  0.040 / 0.060
G19     216.1          31.9                6.9 +/-    0.91      11.7 +/-    0.91  0.030 / 0.040
G28     356.2          61.3                4.9 +/-    0.63       5.5 +/-    0.63  0.040 / 0.050
G30     109.7          75.3                5.6 +/-    0.67       5.8 +/-    0.67  0.080 / 0.110