PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/25-18:43:00
G10     246.4          24.9               10.0 +/-    2.37      19.6 +/-    2.37  0.050 / 0.060
G13     57.7           31.2                9.3 +/-    0.82      15.9 +/-    0.82  0.040 / 0.060
G15     96.5           57.9               11.2 +/-    0.46      13.0 +/-    0.46  0.130 / 0.710
G16     300.1          15.8                7.5 +/-    3.08      18.3 +/-    3.08  0.180 / 0.690
G20     264.6          48.7               11.1 +/-    1.31      14.3 +/-    1.31  0.070 / 0.140
G21     327.7          56.0                9.1 +/-    0.82      10.8 +/-    0.82  0.060 / 0.110
G26     272.9          17.2               10.1 +/-    1.78      23.8 +/-    1.78  0.030 / 0.050
G29     162.0          56.6               10.7 +/-    0.83      12.6 +/-    0.83  0.030 / 0.030