PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-11:12:40
G01     113.6          21.6                1.8 +/-    3.10       3.7 +/-    3.10  0.110 / 0.190
G07     96.5           60.8                3.0 +/-    0.99       3.4 +/-    0.99  0.100 / 0.170
G08     42.8           24.6                2.9 +/-    2.14       5.7 +/-    2.14  0.030 / 0.030
G09     174.5          18.2                4.0 +/-    1.40       9.3 +/-    1.40  0.030 / 0.030
G11     96.5           40.3                4.1 +/-    0.99       5.9 +/-    0.99  0.030 / 0.040
G13     315.8          21.9                2.1 +/-    1.82       4.3 +/-    1.82  0.030 / 0.030
G17     202.6          33.1                4.7 +/-    1.22       7.7 +/-    1.22  0.110 / 0.150
G28     304.8          59.4                0.4 +/-    1.12       0.4 +/-    1.12  0.090 / 0.110
G30     355.2          72.2                2.8 +/-    1.05       2.9 +/-    1.05  0.080 / 0.120