PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/15-21:12:30
G07     324.5          55.4               10.8 +/-    0.82      12.8 +/-    0.82  0.060 / 0.050
G08     111.3          47.7               11.4 +/-    0.42      14.9 +/-    0.42  0.060 / 0.050
G09     228.5          82.5               10.6 +/-    0.39      10.7 +/-    0.39  0.210 / 0.260
G16     43.6           18.6                7.2 +/-    2.26      16.4 +/-    2.26  0.090 / 0.310
G23     152.1          54.2               11.4 +/-    0.66      13.7 +/-    0.66  0.030 / 0.050
G27     68.6           37.1                9.3 +/-    0.78      14.2 +/-    0.78  0.030 / 0.040
G28     229.5          18.4               11.2 +/-    2.73      25.7 +/-    2.73  0.030 / 0.020
G30     293.9          28.5                9.8 +/-    2.03      17.7 +/-    2.03  0.030 / 0.030