PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/18-21:42:50
G01     317.3          23.1                6.8 +/-    2.79      13.8 +/-    2.79  0.180 / 0.410
G08     255.5          11.7                7.9 +/-    7.94      21.2 +/-    7.94  0.180 / 0.360
G10     86.3           49.1                8.4 +/-    0.93      10.6 +/-    0.93  0.040 / 0.050
G11     301.8          22.7                8.1 +/-    1.67      16.8 +/-    1.67  0.040 / 0.050
G14     297.5          69.7               10.4 +/-    0.85      11.0 +/-    0.85  0.100 / 0.200
G20     109.3          24.6                9.9 +/-    1.66      19.6 +/-    1.66  0.120 / 0.190
G22     302.6          11.4                5.9 +/-   12.16      16.0 +/-   12.16  0.170 / 0.420
G31     173.8          46.7               11.1 +/-    1.23      14.6 +/-    1.23  0.170 / 0.460
G32     16.2           64.3                8.3 +/-    0.47       9.1 +/-    0.47  0.030 / 0.050