PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/20-19:58:00
G07     19.8           67.5               12.7 +/-    0.75      13.7 +/-    0.75  0.030 / 0.030
G08     67.1           48.8               12.3 +/-    0.58      15.7 +/-    0.58  0.030 / 0.030
G09     181.2          55.0               14.0 +/-    0.47      16.7 +/-    0.47  0.060 / 0.030
G11     131.9          25.8               13.4 +/-    3.22      25.7 +/-    3.22  0.050 / 0.040
G23     160.0          24.5               13.6 +/-    1.63      26.8 +/-    1.63  0.110 / 0.240
G27     43.3           22.0               10.3 +/-    2.08      21.6 +/-    2.08  0.170 / 0.250
G28     251.7          39.2               12.9 +/-    1.46      19.0 +/-    1.46  0.070 / 0.110
G30     317.0          48.1               11.6 +/-    0.68      14.9 +/-    0.68  0.080 / 0.140