PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-15:57:40
G10     271.0          42.0                9.1 +/-    0.92      12.8 +/-    0.92  0.310 / 0.200
G13     40.1           14.7                5.6 +/-    3.67      14.0 +/-    3.67  0.210 / 0.230
G15     54.4           43.9                7.7 +/-    0.61      10.5 +/-    0.61  0.090 / 0.110
G20     309.2          63.1                7.6 +/-    0.79       8.4 +/-    0.79  0.070 / 0.130
G21     12.5           73.4                7.7 +/-    0.62       8.0 +/-    0.62  0.050 / 0.040
G24     119.8          15.8               10.3 +/-    2.20      25.1 +/-    2.20  0.050 / 0.040
G27     317.4          21.2                5.7 +/-    3.34      12.2 +/-    3.34  0.100 / 0.520
G29     167.8          29.2                8.9 +/-    1.07      15.9 +/-    1.07  0.150 / 0.290
G32     203.9          13.0                7.0 +/-    3.06      18.2 +/-    3.06  0.110 / 0.060