PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/27-20:13:10
G07     318.9          53.2               12.4 +/-    0.94      15.0 +/-    0.94  0.040 / 0.060
G08     117.8          45.1               15.1 +/-    0.83      20.3 +/-    0.83  0.040 / 0.060
G09     271.5          82.7               14.5 +/-    0.63      14.6 +/-    0.63  0.030 / 0.020
G16     42.7           23.1               10.0 +/-    2.62      20.4 +/-    2.62  0.030 / 0.020
G23     149.4          58.8               14.4 +/-    1.14      16.6 +/-    1.14  0.060 / 0.060
G27     74.2           37.8               13.3 +/-    0.99      20.1 +/-    0.99  0.060 / 0.060
G28     226.8          14.4               11.9 +/-    8.64      30.1 +/-    8.64  0.280 / 0.870
G30     290.5          25.9               12.6 +/-    1.66      24.1 +/-    1.66  0.180 / 0.790