PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/24-20:28:10
G07     320.4          53.8                9.3 +/-    0.76      11.2 +/-    0.76  0.030 / 0.060
G08     116.1          45.9               12.2 +/-    0.60      16.3 +/-    0.60  0.040 / 0.050
G09     259.9          83.1               10.0 +/-    1.20      10.1 +/-    1.20  0.030 / 0.030
G16     42.9           21.8                7.3 +/-    2.05      15.3 +/-    2.05  0.040 / 0.030
G23     150.2          57.5               12.0 +/-    0.61      13.9 +/-    0.61  0.070 / 0.060
G27     72.6           37.7                9.9 +/-    1.04      15.0 +/-    1.04  0.060 / 0.040
G28     227.5          15.5               10.2 +/-    9.70      25.2 +/-    9.70  0.160 / 0.210
G30     291.5          26.6                8.6 +/-    1.94      16.2 +/-    1.94  0.420 / 0.430