PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/13-02:27:50
G07     311.1          49.1                5.5 +/-    0.75       7.0 +/-    0.75  0.140 / 0.320
G08     123.7          42.9                8.7 +/-    0.58      12.1 +/-    0.58  0.180 / 0.310
G09     266.3          84.8                8.0 +/-    0.69       8.0 +/-    0.69  0.040 / 0.070
G16     42.8           19.3                3.4 +/-    2.19       7.6 +/-    2.19  0.050 / 0.070
G23     147.0          60.4                8.6 +/-    0.37       9.7 +/-    0.37  0.160 / 0.320
G27     75.1           36.8                8.0 +/-    1.10      12.3 +/-    1.10  0.170 / 0.210
G30     287.1          21.5                7.5 +/-    2.11      16.0 +/-    2.11  0.030 / 0.040