PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/26-19:28:00
G07     14.1           67.0               10.1 +/-    0.87      10.9 +/-    0.87  0.040 / 0.040
G08     70.9           50.0                9.7 +/-    1.22      12.3 +/-    1.22  0.030 / 0.040
G09     182.0          57.9               12.4 +/-    0.62      14.4 +/-    0.62  0.030 / 0.030
G11     133.9          24.1               13.5 +/-    1.21      26.9 +/-    1.21  0.040 / 0.040
G23     159.6          26.8               11.4 +/-    1.44      21.4 +/-    1.44  0.090 / 0.130
G27     44.7           23.7                7.9 +/-    1.68      15.9 +/-    1.68  0.070 / 0.120
G28     249.1          37.4               14.2 +/-    1.95      21.6 +/-    1.95  0.070 / 0.110
G30     314.9          46.5               10.2 +/-    0.85      13.5 +/-    0.85  0.060 / 0.110