PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-02:28:00
G08     292.0          23.5                7.5 +/-    1.47      15.1 +/-    1.47  0.040 / 0.020
G10     4.0            63.1                7.5 +/-    0.84       8.3 +/-    0.84  0.030 / 0.030
G14     230.0          47.8               12.5 +/-    2.19      16.1 +/-    2.19  0.040 / 0.020
G18     61.5           52.3                8.6 +/-    0.70      10.6 +/-    0.70  0.040 / 0.020
G21     145.7          40.4                9.5 +/-    0.98      13.8 +/-    0.98  0.070 / 0.060
G24     57.8           26.9                7.2 +/-    1.44      13.5 +/-    1.44  0.040 / 0.080
G27     253.0          31.6                9.8 +/-    2.84      16.6 +/-    2.84  0.050 / 0.120
G32     244.3          65.8                9.0 +/-    0.34       9.7 +/-    0.34  0.050 / 0.120