PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/25-11:28:10
G07     29.0           68.5                5.3 +/-    1.11       5.6 +/-    1.11  0.060 / 0.130
G08     65.4           50.1                4.3 +/-    0.63       5.5 +/-    0.63  0.060 / 0.110
G09     180.0          49.5                8.6 +/-    0.59      10.9 +/-    0.59  0.040 / 0.030
G11     129.6          29.0                5.9 +/-    1.32      10.6 +/-    1.32  0.030 / 0.030
G18     112.8          10.7                1.7 +/-   11.98       4.7 +/-   11.98  0.230 / 0.230
G23     158.7          15.1                3.7 +/-    2.06       9.1 +/-    2.06  0.280 / 0.280
G27     40.4           17.0                3.7 +/-    2.37       8.8 +/-    2.37  0.050 / 0.050
G28     255.6          40.6                7.7 +/-    2.11      11.0 +/-    2.11  0.050 / 0.050
G30     321.7          52.2                5.1 +/-    0.73       6.3 +/-    0.73  0.230 / 0.410