PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/16-08:27:50
G01     61.0           30.2                5.2 +/-    1.23       9.1 +/-    1.23  0.040 / 0.040
G06     179.5          13.1                1.6 +/-   25.16       4.1 +/-   25.16  0.030 / 0.040
G07     140.7          23.7                5.2 +/-    2.27      10.5 +/-    2.27  0.110 / 0.300
G11     50.0           28.1                3.8 +/-    1.85       7.0 +/-    1.85  0.090 / 0.300
G13     264.0          37.1                6.8 +/-    1.85      10.4 +/-    1.85  0.070 / 0.130
G15     295.3          16.5                4.2 +/-    2.88      10.2 +/-    2.88  0.070 / 0.110
G17     246.7          74.1                7.8 +/-    0.30       8.1 +/-    0.30  0.070 / 0.110
G19     229.3          50.7                7.5 +/-    3.16       9.4 +/-    3.16  0.070 / 0.120
G28     17.1           60.5                3.3 +/-    2.32       3.7 +/-    2.32  0.040 / 0.050
G30     142.7          57.7                8.1 +/-    0.28       9.4 +/-    0.28  0.040 / 0.050