PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/14-22:28:00
G10     273.4          41.0               14.9 +/-    1.69      21.3 +/-    1.69  0.110 / 0.300
G13     40.1           15.2                9.8 +/-    1.55      24.4 +/-    1.55  0.120 / 0.350
G15     54.0           44.5               10.3 +/-    1.05      14.0 +/-    1.05  0.090 / 0.290
G18     314.2          66.0               11.5 +/-    0.88      12.5 +/-    0.88  0.110 / 0.340
G20     58.9           29.9               11.1 +/-    0.91      19.4 +/-    0.91  0.070 / 0.140
G21     25.4           75.4               13.3 +/-    0.61      13.7 +/-    0.61  0.100 / 0.140
G24     116.5          17.4               15.8 +/-    1.16      37.0 +/-    1.16  0.070 / 0.110
G27     314.5          24.7               10.9 +/-    0.92      21.4 +/-    0.92  0.050 / 0.100
G29     166.9          21.3               15.6 +/-    1.37      33.3 +/-    1.37  0.030 / 0.050
G32     206.1          12.5               18.0 +/-   19.05      47.6 +/-   19.05  0.040 / 0.050