PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-21:57:50
G10     293.6          50.0               12.4 +/-    0.64      15.7 +/-    0.64  0.060 / 0.140
G14     209.6          11.4               10.1 +/-   33.94      27.5 +/-   33.94  0.070 / 0.140
G15     46.5           30.1               12.4 +/-    1.14      21.7 +/-    1.14  0.050 / 0.050
G18     354.1          66.4               12.4 +/-    0.43      13.4 +/-    0.43  0.040 / 0.050
G20     70.0           19.3               12.9 +/-    1.70      28.9 +/-    1.70  0.070 / 0.120
G21     93.4           73.7               16.9 +/-    1.01      17.5 +/-    1.01  0.060 / 0.140
G24     101.2          25.7               15.5 +/-    0.90      29.9 +/-    0.90  0.060 / 0.100
G27     301.0          34.3               13.0 +/-    1.34      20.9 +/-    1.34  0.060 / 0.090
G32     210.7          26.9               16.5 +/-    0.95      30.8 +/-    0.95  0.310 / 0.730