PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/17-15:12:30
G10     249.0          27.3               21.6 +/-    0.86      40.0 +/-    0.86  0.160 / 0.700
G13     54.6           29.6                5.0 +/-    0.58       8.8 +/-    0.58  0.160 / 0.660
G15     85.6           56.4                6.6 +/-    0.94       7.8 +/-    0.94  0.070 / 0.140
G16     296.8          16.1                8.9 +/-    3.50      21.5 +/-    3.50  0.080 / 0.120
G20     270.0          52.0                9.7 +/-    0.92      11.9 +/-    0.92  0.040 / 0.060
G21     332.6          58.8                5.6 +/-    0.78       6.4 +/-    0.78  0.040 / 0.060
G26     270.2          16.1                9.2 +/-    2.12      22.4 +/-    2.12  0.030 / 0.040
G29     163.2          53.5                8.7 +/-    1.58      10.6 +/-    1.58  0.040 / 0.040