PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-16:58:00
G07     44.3           67.8               10.7 +/-    0.54      11.5 +/-    0.54  0.040 / 0.040
G08     58.8           45.8               10.5 +/-    0.47      14.0 +/-    0.47  0.030 / 0.030
G09     180.2          47.3               11.9 +/-    0.86      15.6 +/-    0.86  0.030 / 0.040
G11     126.0          30.7               12.8 +/-    0.88      22.1 +/-    0.88  0.020 / 0.030
G18     109.8          12.1               13.5 +/-    2.03      35.9 +/-    2.03  0.090 / 0.150
G23     160.1          15.6               10.9 +/-    2.23      26.6 +/-    2.23  0.130 / 0.110
G27     39.7           15.7                7.7 +/-    3.28      18.8 +/-    3.28  0.100 / 0.440
G28     259.5          43.6               13.0 +/-    2.43      17.9 +/-    2.43  0.100 / 0.420
G30     325.7          55.4               10.3 +/-    0.28      12.3 +/-    0.28  0.150 / 0.350