PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/14-14:42:50
G02     204.6          37.0               10.3 +/-    1.99      15.8 +/-    1.99  0.160 / 0.120
G06     155.9          72.3                8.3 +/-    0.88       8.6 +/-    0.88  0.100 / 0.130
G12     309.8          18.0                5.8 +/-    1.48      13.4 +/-    1.48  0.050 / 0.100
G17     41.8           44.4                5.2 +/-    0.96       7.1 +/-    0.96  0.050 / 0.110
G19     13.3           61.8                6.1 +/-    0.54       6.8 +/-    0.54  0.030 / 0.040
G24     295.7          38.7                7.5 +/-    1.42      11.2 +/-    1.42  0.040 / 0.050
G28     106.5          28.2                6.5 +/-    0.92      11.9 +/-    0.92  0.070 / 0.180