PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-21:27:40
G10     272.0          40.3               15.4 +/-    0.93      22.2 +/-    0.93  0.050 / 0.100
G13     40.5           16.1               10.7 +/-    1.70      25.8 +/-    1.70  0.080 / 0.070
G15     54.7           45.0               10.7 +/-    0.75      14.4 +/-    0.75  0.030 / 0.040
G18     312.2          65.9               13.8 +/-    0.76      15.0 +/-    0.76  0.030 / 0.030
G20     57.9           31.1               10.5 +/-    1.65      18.0 +/-    1.65  0.140 / 0.190
G21     23.1           75.0               15.1 +/-    0.92      15.6 +/-    0.92  0.130 / 0.210
G24     117.5          16.7               12.7 +/-    1.06      30.3 +/-    1.06  0.130 / 0.130
G27     315.2          23.8               15.3 +/-    1.43      30.7 +/-    1.43  0.060 / 0.180
G29     166.5          22.0               16.1 +/-    1.50      33.8 +/-    1.50  0.050 / 0.110
G32     206.1          10.8              -10.6 +/-   39.17     -28.9 +/-   39.17  0.060 / 0.130