PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-09:27:50
G01     95.5           29.3                4.8 +/-    1.72       8.6 +/-    1.72  0.040 / 0.050
G07     119.5          48.9                7.0 +/-    0.74       9.0 +/-    0.74  0.040 / 0.060
G08     41.8           14.9                3.4 +/-    1.73       8.4 +/-    1.73  0.040 / 0.060
G11     77.3           43.5                5.6 +/-    0.72       7.7 +/-    0.72  0.040 / 0.060
G13     300.4          35.0                5.0 +/-    1.46       7.9 +/-    1.46  0.110 / 0.200
G17     209.8          44.9                6.8 +/-    0.78       9.1 +/-    0.78  0.130 / 0.230
G18     69.5           24.6                5.2 +/-    0.72      10.3 +/-    0.72  0.140 / 0.280
G19     210.9          23.3                5.1 +/-    1.74      10.5 +/-    1.74  0.080 / 0.300
G28     321.4          60.1                4.6 +/-    0.71       5.2 +/-    0.71  0.030 / 0.030
G30     68.2           80.5                6.3 +/-    0.95       6.3 +/-    0.95  0.030 / 0.030