PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-18:58:00
G07     323.4          55.1               10.9 +/-    0.64      13.0 +/-    0.64  0.050 / 0.050
G08     114.9          46.7               13.1 +/-    0.76      17.3 +/-    0.76  0.040 / 0.050
G09     251.3          82.9               10.7 +/-    1.13      10.8 +/-    1.13  0.190 / 0.340
G16     43.1           21.4                8.9 +/-    2.22      18.8 +/-    2.22  0.170 / 0.260
G23     150.8          55.4               12.2 +/-    0.70      14.4 +/-    0.70  0.030 / 0.020
G27     70.4           37.3               11.1 +/-    1.43      16.9 +/-    1.43  0.030 / 0.020
G28     228.3          16.3               13.3 +/-    2.01      32.0 +/-    2.01  0.110 / 0.160
G30     292.9          28.1               10.3 +/-    1.33      18.9 +/-    1.33  0.170 / 0.110