PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/22-20:43:10
G07     324.6          55.4               12.0 +/-    0.72      14.2 +/-    0.72  0.050 / 0.050
G08     111.7          47.6               14.0 +/-    0.54      18.2 +/-    0.54  0.040 / 0.050
G09     231.5          82.6               11.2 +/-    0.77      11.3 +/-    0.77  0.170 / 0.230
G16     43.6           19.1                8.8 +/-    2.78      19.8 +/-    2.78  0.070 / 0.040
G23     152.0          54.2               13.8 +/-    0.58      16.5 +/-    0.58  0.250 / 0.190
G27     68.7           37.1               11.7 +/-    0.86      17.8 +/-    0.86  0.090 / 0.410
G28     229.4          18.1               14.4 +/-    3.29      33.1 +/-    3.29  0.030 / 0.020
G30     293.9          28.5               11.3 +/-    0.65      20.5 +/-    0.65  0.030 / 0.030