PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/21-00:43:00
G05     48.6           19.1                8.0 +/-    0.73      17.9 +/-    0.73  0.090 / 0.350
G10     236.6          11.8               15.6 +/-    1.85      41.8 +/-    1.85  0.090 / 0.280
G13     76.6           37.3               12.4 +/-    0.83      18.8 +/-    0.83  0.030 / 0.040
G15     128.3          51.9               16.0 +/-    1.04      19.7 +/-    1.04  0.030 / 0.040
G16     314.8          11.8               10.1 +/-    2.53      27.0 +/-    2.53  0.040 / 0.070
G18     245.4          41.0               13.7 +/-    1.38      19.7 +/-    1.38  0.040 / 0.080
G20     30.4           64.5               12.9 +/-    0.55      14.2 +/-    0.55  0.180 / 0.470
G21     312.8          47.2               10.7 +/-    1.07      14.0 +/-    1.07  0.200 / 0.410
G26     288.3          20.0               10.0 +/-    1.30      21.9 +/-    1.30  0.060 / 0.140
G29     155.8          69.9               13.1 +/-    1.42      13.8 +/-    1.42  0.060 / 0.140