PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/31-02:12:40
G10     294.3          50.3                8.2 +/-    0.81      10.3 +/-    0.81  0.060 / 0.120
G14     209.7          12.3               11.2 +/-    5.53      29.6 +/-    5.53  0.070 / 0.150
G15     46.8           32.0                7.3 +/-    1.10      12.2 +/-    1.10  0.110 / 0.380
G18     350.9          66.4                9.0 +/-    0.53       9.7 +/-    0.53  0.100 / 0.430
G20     70.9           17.6                7.6 +/-    0.94      17.6 +/-    0.94  0.050 / 0.040
G21     91.0           75.0               11.1 +/-    1.31      11.5 +/-    1.31  0.040 / 0.040
G24     100.6          25.9               11.9 +/-    0.42      22.7 +/-    0.42  0.040 / 0.050
G27     300.3          34.6                8.7 +/-    0.65      14.0 +/-    0.65  0.040 / 0.040
G32     210.4          29.8               11.8 +/-    1.14      20.8 +/-    1.14  0.060 / 0.090