PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-16:58:10
G07     346.7          62.3                9.5 +/-    0.76      10.6 +/-    0.76  0.080 / 0.190
G08     95.8           51.8               11.5 +/-    0.46      14.2 +/-    0.46  0.080 / 0.230
G09     192.9          73.4               10.6 +/-    1.42      11.0 +/-    1.42  0.030 / 0.040
G11     143.8          15.0               12.9 +/-    2.68      32.2 +/-    2.68  0.030 / 0.050
G23     155.9          40.3               12.1 +/-    1.01      17.5 +/-    1.01  0.060 / 0.090
G27     55.3           32.2                9.2 +/-    0.58      15.5 +/-    0.58  0.060 / 0.090
G28     236.8          26.3               13.8 +/-    1.42      26.2 +/-    1.42  0.050 / 0.080
G30     304.0          37.6               10.5 +/-    0.91      15.9 +/-    0.91  0.050 / 0.070