PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-20:57:40
G10     293.1          51.2               13.6 +/-    1.51      16.9 +/-    1.51  0.050 / 0.100
G15     47.0           32.0                9.6 +/-    0.67      16.2 +/-    0.67  0.070 / 0.110
G20     345.3          65.3               10.6 +/-    0.59      11.5 +/-    0.59  0.040 / 0.040
G21     78.2           76.5               13.4 +/-    1.14      13.7 +/-    1.14  0.040 / 0.050
G24     103.6          25.0               13.0 +/-    1.23      25.4 +/-    1.23  0.060 / 0.080
G27     305.1          32.3               11.5 +/-    1.85      19.1 +/-    1.85  0.050 / 0.080
G29     168.0          11.8               15.4 +/-    2.62      41.2 +/-    2.62  0.070 / 0.170
G32     208.5          28.3               15.7 +/-    3.40      28.5 +/-    3.40  0.070 / 0.160