PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/10-13:58:00
G10     256.8          33.4                3.9 +/-    1.82       6.3 +/-    1.82  0.310 / 0.160
G13     47.5           24.4                5.4 +/-    2.04      10.7 +/-    2.04  0.170 / 0.540
G15     69.1           52.6                5.4 +/-    0.50       6.6 +/-    0.50  0.180 / 0.760
G16     288.3          15.3                4.4 +/-    1.98      10.9 +/-    1.98  0.100 / 0.100
G20     283.9          57.6                6.0 +/-    2.06       6.9 +/-    2.06  0.100 / 0.070
G21     345.6          65.2                4.3 +/-    0.68       4.7 +/-    0.68  0.040 / 0.050
G26     262.7          12.7                3.6 +/-    1.20       9.6 +/-    1.20  0.050 / 0.040
G27     322.1          10.4              -15.2 +/-   10.52     -42.1 +/-   10.52  0.040 / 0.050
G29     165.5          43.8                7.0 +/-    0.73       9.6 +/-    0.73  0.050 / 0.040