PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-02:27:50
G01     319.7          15.5                5.9 +/-    1.25      14.4 +/-    1.25  0.150 / 0.530
G08     258.5          14.7               10.2 +/-    2.91      25.6 +/-    2.91  0.140 / 0.330
G10     73.6           55.8                7.0 +/-    0.58       8.3 +/-    0.58  0.030 / 0.030
G11     304.4          23.1                7.7 +/-    2.14      15.7 +/-    2.14  0.030 / 0.030
G14     291.7          70.8                7.2 +/-    0.47       7.6 +/-    0.47  0.210 / 0.360
G18     98.6           31.9                7.9 +/-    0.70      13.3 +/-    0.70  0.200 / 0.490
G27     224.9          10.3               10.9 +/-    4.70      30.3 +/-    4.70  0.050 / 0.050
G31     178.0          37.3                9.7 +/-    1.25      14.8 +/-    1.25  0.050 / 0.050
G32     354.0          70.6                6.9 +/-    0.76       7.3 +/-    0.76  0.050 / 0.080