PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/15-16:57:50
G10     265.0          37.4                9.0 +/-    1.10      13.6 +/-    1.10  0.160 / 0.300
G13     42.7           19.4                6.0 +/-    1.08      13.3 +/-    1.08  0.150 / 0.270
G15     63.4           52.3                7.6 +/-    0.29       9.4 +/-    0.29  0.040 / 0.050
G16     281.5          12.7                8.2 +/-    1.12      21.6 +/-    1.12  0.040 / 0.050
G20     294.1          59.5                8.3 +/-    1.01       9.5 +/-    1.01  0.130 / 0.340
G21     4.0            71.4                8.2 +/-    0.64       8.6 +/-    0.64  0.140 / 0.380
G24     118.2          13.5               10.9 +/-    1.28      28.0 +/-    1.28  0.120 / 0.270
G27     320.3          15.6                4.6 +/-    2.26      11.2 +/-    2.26  0.160 / 0.380
G29     167.1          32.6               10.0 +/-    1.04      16.6 +/-    1.04  0.080 / 0.260