PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-03:12:30
G08     290.0          23.6                9.2 +/-    1.26      18.6 +/-    1.26  0.040 / 0.030
G10     8.1            63.2                8.8 +/-    1.05       9.7 +/-    1.05  0.030 / 0.020
G14     231.8          49.5               13.3 +/-    2.71      16.8 +/-    2.71  0.040 / 0.090
G18     63.7           51.6                9.3 +/-    0.82      11.5 +/-    0.82  0.050 / 0.080
G21     146.7          38.8               11.7 +/-    1.09      17.4 +/-    1.09  0.200 / 0.140
G24     56.0           26.1                8.2 +/-    2.34      15.6 +/-    2.34  0.190 / 0.140
G27     251.1          30.6               11.0 +/-    2.98      19.0 +/-    2.98  0.030 / 0.030
G32     248.3          67.7                9.6 +/-    0.52      10.3 +/-    0.52  0.030 / 0.020