PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-07:28:10
G01     126.6          10.4              -18.7 +/-   19.11     -51.6 +/-   19.11  0.040 / 0.040
G07     52.4           69.1                5.1 +/-    0.39       5.4 +/-    0.39  0.030 / 0.050
G08     53.0           42.6                3.6 +/-    0.63       5.1 +/-    0.63  0.030 / 0.040
G09     177.1          37.0                7.0 +/-    2.10      10.7 +/-    2.10  0.030 / 0.040
G11     122.0          35.3                7.2 +/-    0.84      11.4 +/-    0.84  0.130 / 0.410
G13     321.0          11.6               -4.0 +/-   14.05     -10.7 +/-   14.05  0.130 / 0.490
G17     199.7          11.6               -1.2 +/-   16.53      -3.2 +/-   16.53  0.090 / 0.190
G18     104.5          15.9                6.0 +/-    1.70      14.6 +/-    1.70  0.070 / 0.230
G28     266.5          46.0                5.7 +/-    1.27       7.6 +/-    1.27  0.180 / 0.380
G30     328.4          57.8                3.5 +/-    0.46       4.0 +/-    0.46  0.050 / 0.090