PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-13:43:10
G01     69.4           32.5                8.0 +/-    1.28      13.4 +/-    1.28  0.030 / 0.040
G07     137.8          27.4                8.4 +/-    1.48      15.5 +/-    1.48  0.030 / 0.030
G11     52.2           27.6                5.3 +/-    0.80       9.8 +/-    0.80  0.040 / 0.130
G13     275.8          36.7                9.2 +/-    1.76      14.2 +/-    1.76  0.040 / 0.110
G15     303.8          14.6                3.2 +/-    4.09       8.1 +/-    4.09  0.070 / 0.120
G17     237.3          72.7                7.9 +/-    0.77       8.2 +/-    0.77  0.080 / 0.120
G19     225.1          44.9               10.6 +/-    1.47      14.4 +/-    1.47  0.040 / 0.040
G28     21.7           58.9                8.0 +/-    0.46       9.1 +/-    0.46  0.020 / 0.040
G30     135.6          62.9                9.1 +/-    0.68      10.0 +/-    0.68  0.060 / 0.070