PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-19:57:40
G07     61.7           67.1               12.3 +/-    0.30      13.3 +/-    0.30  0.030 / 0.030
G08     51.0           39.6               11.1 +/-    1.46      16.2 +/-    1.46  0.030 / 0.030
G09     178.9          38.9               13.5 +/-    0.99      20.0 +/-    0.99  0.100 / 0.090
G11     118.3          35.1               14.9 +/-    0.90      23.6 +/-    0.90  0.060 / 0.120
G17     198.9          14.3               18.1 +/-    3.65      45.9 +/-    3.65  0.080 / 0.080
G18     102.5          15.8               14.3 +/-    2.91      34.9 +/-    2.91  0.070 / 0.070
G27     37.8           10.2                9.4 +/-    3.97      26.0 +/-    3.97  0.070 / 0.340
G28     269.4          48.8               12.9 +/-    3.43      16.5 +/-    3.43  0.070 / 0.330
G30     331.9          60.0                9.9 +/-    0.37      11.3 +/-    0.37  0.030 / 0.040