PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/23-21:12:40
G01     318.9          19.6                7.2 +/-    2.18      16.0 +/-    2.18  0.160 / 0.310
G08     259.0          13.8                8.3 +/-    1.60      21.1 +/-    1.60  0.150 / 0.270
G10     80.1           51.6                8.2 +/-    0.43      10.1 +/-    0.43  0.040 / 0.050
G11     305.7          20.7                7.5 +/-    2.27      16.2 +/-    2.27  0.040 / 0.050
G14     284.7          68.3                1.0 +/-    0.56       1.1 +/-    0.56  0.140 / 0.410
G20     105.9          27.5                8.5 +/-    1.16      15.7 +/-    1.16  0.130 / 0.360
G31     175.2          41.8               10.3 +/-    1.23      14.6 +/-    1.23  0.040 / 0.080
G32     9.1            67.4                7.6 +/-    0.58       8.2 +/-    0.58  0.060 / 0.070