PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-04:43:00
G07     331.4          57.8                4.2 +/-    0.68       4.9 +/-    0.68  0.110 / 0.100
G08     104.2          51.1                6.6 +/-    0.39       8.2 +/-    0.39  0.100 / 0.120
G09     186.6          74.4                6.6 +/-    0.53       6.8 +/-    0.53  0.040 / 0.050
G11     148.9          12.2                5.0 +/-    1.50      13.3 +/-    1.50  0.040 / 0.050
G23     154.6          43.6                5.8 +/-    0.73       8.0 +/-    0.73  0.040 / 0.020
G27     57.5           32.7                5.4 +/-    1.71       8.9 +/-    1.71  0.030 / 0.020
G28     233.6          20.4                5.4 +/-    2.06      11.7 +/-    2.06  0.150 / 0.380
G30     298.8          31.6                4.0 +/-    1.30       6.8 +/-    1.30  0.280 / 0.540