PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/25-17:58:10
G10     254.0          29.8               10.1 +/-    2.51      17.7 +/-    2.51  0.110 / 0.490
G13     50.0           27.2                7.6 +/-    2.17      14.2 +/-    2.17  0.120 / 0.470
G15     83.8           58.6                8.7 +/-    0.50      10.0 +/-    0.50  0.040 / 0.040
G16     291.9          15.1                6.9 +/-    2.88      17.1 +/-    2.88  0.050 / 0.040
G20     275.4          53.3               10.0 +/-    3.90      12.1 +/-    3.90  0.100 / 0.250
G21     341.1          63.6                9.3 +/-    0.86      10.3 +/-    0.86  0.080 / 0.190
G26     265.0          13.9                8.4 +/-    2.42      21.3 +/-    2.42  0.030 / 0.040
G29     165.3          45.4               10.6 +/-    0.73      14.3 +/-    0.73  0.030 / 0.040