PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/20-17:27:50
G10     257.3          33.6               10.0 +/-    1.88      16.3 +/-    1.88  0.140 / 0.380
G13     47.1           24.2                6.9 +/-    0.63      13.8 +/-    0.63  0.170 / 0.380
G15     70.8           54.0                8.4 +/-    0.32      10.2 +/-    0.32  0.050 / 0.050
G16     287.8          15.2                6.9 +/-    3.33      17.0 +/-    3.33  0.050 / 0.060
G20     283.1          56.8                9.9 +/-    1.07      11.6 +/-    1.07  0.150 / 0.650
G21     343.8          64.8                6.6 +/-    0.88       7.2 +/-    0.88  0.160 / 0.500
G26     261.6          12.5               10.0 +/-    1.42      26.3 +/-    1.42  0.050 / 0.060
G27     322.1          10.7              -11.0 +/-   28.03     -30.2 +/-   28.03  0.050 / 0.060
G29     165.7          43.0               11.0 +/-    0.59      15.3 +/-    0.59  0.080 / 0.130