PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-20:57:50
G05     51.2           11.9                7.7 +/-    1.25      20.5 +/-    1.25  0.050 / 0.070
G10     240.7          19.3               14.1 +/-    2.83      31.5 +/-    2.83  0.040 / 0.080
G13     65.9           34.0                9.2 +/-    0.39      14.8 +/-    0.39  0.120 / 0.510
G15     112.7          56.2               11.6 +/-    0.58      13.7 +/-    0.58  0.100 / 0.470
G16     307.7          14.5                9.8 +/-    2.50      24.7 +/-    2.50  0.100 / 0.180
G20     255.5          42.5               12.9 +/-    0.83      18.1 +/-    0.83  0.220 / 0.260
G21     319.8          50.8               12.9 +/-    1.05      16.1 +/-    1.05  0.050 / 0.140
G26     280.4          19.2               10.4 +/-    1.57      23.3 +/-    1.57  0.050 / 0.110
G29     158.2          64.4               10.7 +/-    0.90      11.7 +/-    0.90  0.030 / 0.050