PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-22:57:50
G08     304.2          21.4               13.3 +/-    2.19      28.3 +/-    2.19  0.030 / 0.020
G10     339.3          61.0               11.8 +/-    0.52      13.3 +/-    0.52  0.040 / 0.020
G14     220.9          36.7               14.7 +/-    1.14      22.6 +/-    1.14  0.040 / 0.050
G18     46.3           57.2               14.1 +/-    0.45      16.5 +/-    0.45  0.030 / 0.050
G21     138.0          50.6               15.4 +/-    0.41      19.3 +/-    0.41  0.050 / 0.070
G24     70.2           30.2               14.4 +/-    1.85      25.1 +/-    1.85  0.060 / 0.080
G27     266.9          36.5               14.6 +/-    1.50      22.6 +/-    1.50  0.090 / 0.070
G32     227.8          53.3               14.1 +/-    3.08      17.2 +/-    3.08  0.090 / 0.090