PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-17:58:10
G02     53.9           37.7               12.4 +/-    0.39      18.8 +/-    0.39  0.120 / 0.230
G05     78.7           69.6               12.5 +/-    0.42      13.2 +/-    0.42  0.110 / 0.330
G12     187.1          40.3               14.9 +/-    1.14      21.5 +/-    1.14  0.040 / 0.070
G13     135.0          10.4               -4.2 +/-   28.00     -11.8 +/-   28.00  0.080 / 0.070
G20     204.3          52.6               15.4 +/-    1.09      18.8 +/-    1.09  0.040 / 0.060
G21     266.1          14.4               13.0 +/-    4.50      32.7 +/-    4.50  0.040 / 0.060
G25     243.2          55.9               15.2 +/-    0.96      17.9 +/-    0.96  0.160 / 0.630
G29     327.0          52.2               11.4 +/-    0.60      14.0 +/-    0.60  0.050 / 0.070