PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-08:57:40
G07     336.4          59.0                3.0 +/-    1.07       3.5 +/-    1.07  0.040 / 0.060
G08     96.1           51.2                7.0 +/-    0.46       8.7 +/-    0.46  0.030 / 0.040
G09     184.9          72.1                6.5 +/-    0.99       6.8 +/-    0.99  0.030 / 0.030
G11     144.1          12.9                4.4 +/-    3.18      11.6 +/-    3.18  0.030 / 0.040
G16     46.5           10.2                2.4 +/-    2.34       6.7 +/-    2.34  0.090 / 0.100
G23     156.0          43.7                6.8 +/-    0.60       9.3 +/-    0.60  0.090 / 0.090
G27     54.3           30.8                4.8 +/-    0.69       8.3 +/-    0.69  0.090 / 0.370
G28     237.5          29.9                4.3 +/-    1.37       7.5 +/-    1.37  0.090 / 0.450
G30     301.0          33.8                4.5 +/-    1.12       7.3 +/-    1.12  0.060 / 0.080