PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-19:42:30
G10     253.7          30.9               13.1 +/-    2.59      22.5 +/-    2.59  0.040 / 0.040
G13     49.9           26.6               11.7 +/-    1.19      22.0 +/-    1.19  0.050 / 0.050
G15     79.9           56.9               10.5 +/-    0.68      12.2 +/-    0.68  0.080 / 0.180
G16     291.8          15.6                8.7 +/-    4.16      21.2 +/-    4.16  0.080 / 0.220
G20     276.1          53.9               13.3 +/-    1.12      16.0 +/-    1.12  0.150 / 0.690
G21     337.8          61.9               12.5 +/-    0.98      14.0 +/-    0.98  0.150 / 0.780
G26     264.8          14.1               10.2 +/-    1.64      26.0 +/-    1.64  0.030 / 0.050
G29     164.7          46.8               11.3 +/-    1.18      14.9 +/-    1.18  0.030 / 0.050