PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-19:28:00
G07     23.9           67.7               11.7 +/-    0.45      12.5 +/-    0.45  0.040 / 0.030
G08     65.6           48.4               12.0 +/-    0.96      15.4 +/-    0.96  0.030 / 0.040
G09     181.1          53.8               13.1 +/-    0.72      15.9 +/-    0.72  0.090 / 0.120
G11     131.0          26.6               13.0 +/-    0.94      24.4 +/-    0.94  0.080 / 0.130
G23     160.1          23.0               13.2 +/-    1.57      27.1 +/-    1.57  0.040 / 0.040
G27     42.6           21.0                9.9 +/-    2.28      21.3 +/-    2.28  0.040 / 0.050
G28     252.9          40.0               14.4 +/-    1.73      21.0 +/-    1.73  0.110 / 0.250
G30     318.3          49.3               10.3 +/-    0.85      13.1 +/-    0.85  0.140 / 0.330