PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/27-18:28:00
G10     246.0          21.9               14.3 +/-    1.55      30.0 +/-    1.55  0.150 / 0.390
G13     60.2           33.9               12.3 +/-    0.71      19.9 +/-    0.71  0.120 / 0.360
G15     96.6           57.3               13.5 +/-    0.47      15.7 +/-    0.47  0.040 / 0.060
G16     306.3          12.9               10.1 +/-    2.29      26.5 +/-    2.29  0.050 / 0.060
G18     262.0          53.3               13.3 +/-    0.79      16.2 +/-    0.79  0.110 / 0.370
G20     38.0           54.3               11.0 +/-    0.62      13.2 +/-    0.62  0.110 / 0.390
G21     330.7          58.6               11.5 +/-    0.55      13.2 +/-    0.55  0.030 / 0.060
G26     278.1          16.8               12.1 +/-    2.47      28.9 +/-    2.47  0.040 / 0.060
G29     160.0          49.9               13.4 +/-    1.03      17.0 +/-    1.03  0.040 / 0.100