PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/13-18:58:10
G05     49.2           17.8               12.1 +/-    1.64      28.2 +/-    1.64  0.090 / 0.290
G10     237.7          13.2               15.9 +/-    2.70      41.3 +/-    2.70  0.100 / 0.250
G13     74.6           37.2               15.9 +/-    0.54      24.2 +/-    0.54  0.060 / 0.140
G15     119.9          53.5               18.5 +/-    0.59      22.4 +/-    0.59  0.060 / 0.130
G16     316.2          10.4               -4.2 +/-   19.12     -11.7 +/-   19.12  0.170 / 0.780
G18     248.0          44.5               18.4 +/-    1.09      25.0 +/-    1.09  0.210 / 0.700
G20     29.1           64.8               16.7 +/-    0.57      18.3 +/-    0.57  0.050 / 0.080
G21     317.0          50.3               17.0 +/-    0.81      21.3 +/-    0.81  0.040 / 0.080
G26     290.1          18.7               14.5 +/-    1.43      32.9 +/-    1.43  0.050 / 0.050
G29     154.2          64.0               17.4 +/-    0.61      19.1 +/-    0.61  0.050 / 0.050