PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/31-16:42:40
G10     257.3          33.6                9.3 +/-    1.91      15.1 +/-    1.91  0.040 / 0.040
G13     47.1           24.1                8.2 +/-    2.36      16.3 +/-    2.36  0.040 / 0.050
G15     70.2           53.6                9.0 +/-    0.31      10.9 +/-    0.31  0.080 / 0.180
G20     283.5          57.1               10.2 +/-    1.69      11.9 +/-    1.69  0.080 / 0.170
G21     344.3          64.9                9.0 +/-    0.60       9.8 +/-    0.60  0.060 / 0.050
G26     261.6          12.4                7.5 +/-    5.34      19.8 +/-    5.34  0.040 / 0.060
G27     322.1          10.7              -12.5 +/-   20.96     -34.2 +/-   20.96  0.230 / 0.140
G29     165.7          43.1               11.8 +/-    0.66      16.3 +/-    0.66  0.050 / 0.050