PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-08:57:40
G01     320.6          13.9              -19.2 +/-   19.78     -49.1 +/-   19.78  0.100 / 0.200
G08     262.6          16.2                6.7 +/-    2.25      16.1 +/-    2.25  0.090 / 0.260
G10     71.4           55.0                3.8 +/-    0.45       4.5 +/-    0.45  0.180 / 0.290
G11     307.4          20.6                5.1 +/-    2.57      11.1 +/-    2.57  0.140 / 0.440
G14     280.5          69.5                4.7 +/-    0.85       5.0 +/-    0.85  0.030 / 0.040
G18     308.6          37.8                5.0 +/-    1.38       7.5 +/-    1.38  0.030 / 0.030
G20     100.5          32.9                5.2 +/-    1.35       8.5 +/-    1.35  0.040 / 0.060
G27     229.3          13.1                5.2 +/-    4.21      13.5 +/-    4.21  0.050 / 0.060
G31     177.4          35.4                7.1 +/-    1.08      11.2 +/-    1.08  0.130 / 0.300
G32     339.4          72.8                5.3 +/-    0.43       5.5 +/-    0.43  0.100 / 0.280