PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-01:28:00
G08     293.4          23.4                9.2 +/-    1.03      18.6 +/-    1.03  0.060 / 0.070
G10     1.4            62.9                8.0 +/-    0.69       8.9 +/-    0.69  0.040 / 0.110
G14     228.9          46.7               12.9 +/-    1.09      17.0 +/-    1.09  0.050 / 0.090
G18     60.3           52.7                9.2 +/-    0.75      11.2 +/-    0.75  0.050 / 0.090
G21     145.0          41.3               12.1 +/-    0.82      17.2 +/-    0.82  0.030 / 0.030
G24     59.0           27.4                8.8 +/-    0.75      16.2 +/-    0.75  0.030 / 0.030
G27     254.4          32.3               11.7 +/-    1.31      19.6 +/-    1.31  0.030 / 0.030
G32     241.8          64.2               11.0 +/-    0.70      12.1 +/-    0.70  0.040 / 0.030