PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/16-20:27:50
G07     36.3           68.3               15.1 +/-    0.51      16.1 +/-    0.51  0.040 / 0.030
G08     59.1           45.4               14.0 +/-    1.41      18.8 +/-    1.41  0.050 / 0.030
G09     179.9          48.1               18.2 +/-    1.05      23.5 +/-    1.05  0.100 / 0.120
G11     126.7          29.8               21.2 +/-    1.86      37.3 +/-    1.86  0.150 / 0.130
G18     109.8          11.5               19.9 +/-    3.10      53.8 +/-    3.10  0.130 / 0.230
G23     160.7          18.5               20.1 +/-    1.43      46.0 +/-    1.43  0.110 / 0.310
G27     40.4           17.3               10.9 +/-    2.41      25.6 +/-    2.41  0.070 / 0.040
G28     258.6          43.6               18.6 +/-    2.73      25.7 +/-    2.73  0.080 / 0.050
G30     322.5          52.8               14.2 +/-    0.65      17.3 +/-    0.65  0.040 / 0.040