PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/31-18:58:10
G10     265.3          36.5               13.6 +/-    0.97      21.0 +/-    0.97  0.090 / 0.150
G13     43.2           20.7               11.8 +/-    1.22      25.5 +/-    1.22  0.100 / 0.160
G15     60.2           49.1               13.4 +/-    0.41      17.1 +/-    0.41  0.030 / 0.040
G16     286.1          11.3               13.7 +/-    2.21      37.0 +/-    2.21  0.050 / 0.050
G18     299.6          64.5               12.3 +/-    0.72      13.4 +/-    0.72  0.040 / 0.090
G20     53.0           36.8               11.2 +/-    0.82      17.1 +/-    0.82  0.060 / 0.100
G21     8.9            72.3               14.1 +/-    0.87      14.7 +/-    0.87  0.110 / 0.360
G24     122.7          13.0               12.3 +/-    2.03      32.1 +/-    2.03  0.120 / 0.330
G27     318.5          19.0               11.3 +/-    2.40      25.4 +/-    2.40  0.080 / 0.260
G29     165.1          26.8               14.8 +/-    1.20      27.7 +/-    1.20  0.080 / 0.240