PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/29-20:57:40
G10     256.0          32.5               12.5 +/-    1.81      20.8 +/-    1.81  0.040 / 0.050
G13     48.1           25.1               10.0 +/-    1.89      19.5 +/-    1.89  0.040 / 0.050
G15     75.9           56.2               11.8 +/-    0.70      13.8 +/-    0.70  0.030 / 0.040
G16     289.6          15.2                8.9 +/-    2.44      22.1 +/-    2.44  0.030 / 0.040
G20     279.3          54.9               11.1 +/-    3.21      13.2 +/-    3.21  0.120 / 0.170
G21     341.0          63.5               11.7 +/-    0.64      12.9 +/-    0.64  0.090 / 0.160
G26     262.7          13.0               12.5 +/-    1.76      32.6 +/-    1.76  0.190 / 0.270
G29     165.2          43.7               12.4 +/-    0.65      17.1 +/-    0.65  0.190 / 0.330