PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-23:12:50
G10     267.3          37.6               14.3 +/-    1.11      21.7 +/-    1.11  0.140 / 0.290
G13     42.4           19.6               11.2 +/-    1.06      25.0 +/-    1.06  0.090 / 0.220
G15     59.5           49.3               15.0 +/-    0.84      19.1 +/-    0.84  0.040 / 0.050
G16     281.3          11.2               13.5 +/-    1.72      36.8 +/-    1.72  0.050 / 0.050
G18     300.9          64.3               12.8 +/-    1.06      14.1 +/-    1.06  0.060 / 0.090
G20     55.3           33.7               11.2 +/-    0.75      18.3 +/-    0.75  0.080 / 0.100
G21     6.2            72.6               14.7 +/-    1.10      15.3 +/-    1.10  0.030 / 0.060
G24     121.1          14.1               18.6 +/-    1.59      47.3 +/-    1.59  0.030 / 0.060
G27     317.5          20.7               10.5 +/-    4.02      22.7 +/-    4.02  0.050 / 0.090
G29     166.7          27.5               16.8 +/-    0.95      31.1 +/-    0.95  0.060 / 0.100