PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-16:58:10
G10     246.4          22.3               12.6 +/-    1.57      26.2 +/-    1.57  0.040 / 0.050
G13     59.6           33.6               10.9 +/-    0.60      17.7 +/-    0.60  0.040 / 0.050
G15     94.9           57.2               12.9 +/-    0.40      15.1 +/-    0.40  0.050 / 0.050
G16     306.1          12.9                7.1 +/-    2.16      18.6 +/-    2.16  0.050 / 0.050
G18     263.1          54.1               11.8 +/-    1.22      14.2 +/-    1.22  0.140 / 0.270
G20     37.6           54.6                9.1 +/-    0.58      10.9 +/-    0.58  0.120 / 0.270
G21     332.9          59.7                9.7 +/-    1.09      11.0 +/-    1.09  0.120 / 0.440
G26     276.4          16.9                9.0 +/-    1.82      21.5 +/-    1.82  0.120 / 0.290
G29     160.4          49.9               13.8 +/-    1.13      17.4 +/-    1.13  0.050 / 0.130