PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-17:13:10
G10     249.8          27.9               10.9 +/-    1.76      19.9 +/-    1.76  0.160 / 0.480
G13     53.7           29.1                8.9 +/-    1.73      15.9 +/-    1.73  0.160 / 0.470
G15     85.7           57.0               10.2 +/-    0.71      11.9 +/-    0.71  0.040 / 0.050
G16     295.8          16.0                9.1 +/-    6.00      22.1 +/-    6.00  0.040 / 0.050
G20     270.7          52.0               11.4 +/-    2.99      14.1 +/-    2.99  0.140 / 0.140
G21     332.9          59.1                9.8 +/-    0.81      11.2 +/-    0.81  0.150 / 0.150
G26     269.0          15.8               10.6 +/-    1.24      25.9 +/-    1.24  0.030 / 0.040
G29     163.5          52.2               13.0 +/-    0.54      16.0 +/-    0.54  0.030 / 0.050