PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-01:28:10
G10     249.7          27.3               12.1 +/-    2.16      22.5 +/-    2.16  0.100 / 0.110
G13     54.0           29.5                9.1 +/-    1.77      16.1 +/-    1.77  0.110 / 0.050
G15     86.7           57.2               11.9 +/-    1.10      13.8 +/-    1.10  0.040 / 0.050
G16     298.3          15.1                7.3 +/-    1.79      18.2 +/-    1.79  0.050 / 0.040
G20     268.6          50.0               11.2 +/-    2.87      14.1 +/-    2.87  0.120 / 0.390
G21     332.9          59.2                9.7 +/-    0.61      11.1 +/-    0.61  0.120 / 0.410
G26     270.1          15.8               12.0 +/-    2.00      29.3 +/-    2.00  0.080 / 0.150
G29     162.3          49.6               12.0 +/-    0.62      15.2 +/-    0.62  0.110 / 0.140