PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-17:57:50
G10     271.4          40.1               11.7 +/-    1.20      16.9 +/-    1.20  0.110 / 0.110
G13     40.6           16.2               11.7 +/-    1.89      28.2 +/-    1.89  0.130 / 0.110
G15     54.5           44.4               12.8 +/-    0.68      17.4 +/-    0.68  0.030 / 0.030
G18     313.6          66.3               11.4 +/-    0.49      12.3 +/-    0.49  0.030 / 0.030
G20     56.7           33.1               10.9 +/-    2.02      18.0 +/-    2.02  0.120 / 0.200
G21     30.7           74.9               12.3 +/-    0.50      12.7 +/-    0.50  0.110 / 0.190
G24     118.0          16.4               15.7 +/-    1.30      37.8 +/-    1.30  0.070 / 0.130
G27     315.7          23.3               10.3 +/-    1.23      21.0 +/-    1.23  0.050 / 0.110
G29     166.0          21.7               14.2 +/-    1.11      30.0 +/-    1.11  0.100 / 0.260
G32     205.6          11.5               -1.5 +/-   42.22      -4.2 +/-   42.22  0.110 / 0.540