PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/23-14:42:30
G10     246.9          25.6                8.4 +/-    2.06      16.2 +/-    2.06  0.180 / 0.640
G13     57.0           30.8                8.3 +/-    1.15      14.3 +/-    1.15  0.170 / 0.630
G15     90.0           56.6                8.8 +/-    0.64      10.3 +/-    0.64  0.120 / 0.150
G16     299.2          16.0                4.1 +/-    4.06       9.9 +/-    4.06  0.060 / 0.110
G20     266.8          50.6                9.0 +/-    1.41      11.3 +/-    1.41  0.030 / 0.040
G21     330.0          57.3                6.5 +/-    0.37       7.6 +/-    0.37  0.030 / 0.040
G26     272.7          16.9                6.1 +/-    1.53      14.5 +/-    1.53  0.040 / 0.060
G29     162.3          56.3               11.2 +/-    1.17      13.2 +/-    1.17  0.040 / 0.060