PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-17:12:50
G01     320.5          14.5               -2.1 +/-   22.45      -5.3 +/-   22.45  0.160 / 0.350
G08     263.0          17.0                8.2 +/-    1.27      19.4 +/-    1.27  0.110 / 0.500
G10     69.7           54.9                7.3 +/-    0.99       8.8 +/-    0.99  0.040 / 0.040
G11     312.2          15.8                4.2 +/-    4.52      10.2 +/-    4.52  0.040 / 0.050
G14     267.9          64.9                9.5 +/-    0.71      10.3 +/-    0.71  0.220 / 0.460
G20     100.6          30.9                8.5 +/-    1.71      14.6 +/-    1.71  0.260 / 0.640
G21     155.4          11.2                9.9 +/-    5.28      26.8 +/-    5.28  0.110 / 0.190
G27     228.9          14.0                7.7 +/-    2.14      19.7 +/-    2.14  0.170 / 0.240
G31     178.1          33.2                9.7 +/-    1.20      16.0 +/-    1.20  0.030 / 0.030
G32     356.2          71.8                7.3 +/-    0.68       7.7 +/-    0.68  0.040 / 0.040