PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-02:12:30
G08     295.3          23.3                9.4 +/-    0.78      19.0 +/-    0.78  0.040 / 0.030
G10     357.2          62.7                8.8 +/-    0.51       9.7 +/-    0.51  0.030 / 0.020
G14     227.3          45.0               12.1 +/-    2.76      16.3 +/-    2.76  0.040 / 0.050
G18     57.4           53.9               10.5 +/-    0.54      12.7 +/-    0.54  0.050 / 0.070
G21     144.0          43.5               11.6 +/-    0.61      16.0 +/-    0.61  0.050 / 0.120
G24     60.8           28.0                9.3 +/-    1.65      17.0 +/-    1.65  0.070 / 0.080
G27     256.5          33.2               11.2 +/-    2.74      18.5 +/-    2.74  0.040 / 0.030
G32     239.0          63.1               11.0 +/-    1.30      12.2 +/-    1.30  0.030 / 0.020