PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-16:43:10
G07     51.9           67.6                9.4 +/-    0.28      10.1 +/-    0.28  0.050 / 0.090
G08     55.8           44.0                9.4 +/-    0.50      12.9 +/-    0.50  0.060 / 0.090
G09     179.8          44.1               12.5 +/-    2.03      17.1 +/-    2.03  0.030 / 0.040
G11     123.4          32.5               11.2 +/-    1.17      18.6 +/-    1.17  0.030 / 0.040
G18     107.3          13.6               10.3 +/-    2.79      26.5 +/-    2.79  0.060 / 0.080
G23     160.2          12.7               10.0 +/-    1.92      26.2 +/-    1.92  0.070 / 0.080
G27     38.7           13.3                6.7 +/-    1.33      17.5 +/-    1.33  0.080 / 0.140
G28     262.9          45.4                9.1 +/-    0.79      12.2 +/-    0.79  0.070 / 0.140
G30     329.1          57.8                8.7 +/-    0.81      10.1 +/-    0.81  0.090 / 0.340