PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/08-21:58:10
G13     58.0           31.4                9.6 +/-    1.58      16.3 +/-    1.58  0.040 / 0.050
G15     97.4           57.9               11.3 +/-    1.22      13.0 +/-    1.22  0.040 / 0.050
G16     301.1          15.5                7.8 +/-    2.30      19.1 +/-    2.30  0.130 / 0.470
G20     263.4          47.3               12.3 +/-    3.46      16.0 +/-    3.46  0.120 / 0.520
G21     327.3          55.8                9.8 +/-    0.72      11.5 +/-    0.72  0.070 / 0.140
G26     273.4          17.3                9.7 +/-    2.28      22.9 +/-    2.28  0.060 / 0.150
G29     161.5          55.9               10.9 +/-    0.73      12.8 +/-    0.73  0.030 / 0.040