PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-17:27:50
G07     333.2          58.6               11.4 +/-    0.76      13.1 +/-    0.76  0.040 / 0.050
G08     107.5          49.5               12.2 +/-    0.51      15.5 +/-    0.51  0.040 / 0.040
G09     213.6          80.3               11.3 +/-    0.32      11.5 +/-    0.32  0.520 / 0.620
G11     148.4          10.4                0.7 +/-   21.15       1.9 +/-   21.15  0.200 / 0.340
G16     44.7           15.3                8.6 +/-    2.30      21.3 +/-    2.30  0.060 / 0.080
G23     153.3          48.5               12.7 +/-    0.74      16.3 +/-    0.74  0.070 / 0.070
G27     63.2           35.5               10.2 +/-    1.24      16.0 +/-    1.24  0.110 / 0.100
G28     231.7          20.6               11.5 +/-    3.92      25.0 +/-    3.92  0.080 / 0.110
G30     297.8          32.4               10.8 +/-    2.57      18.0 +/-    2.57  0.030 / 0.030