PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/26-19:13:10
G10     260.7          35.8               10.5 +/-    1.69      16.5 +/-    1.69  0.110 / 0.170
G13     44.9           21.8                6.7 +/-    1.06      14.2 +/-    1.06  0.090 / 0.170
G15     66.9           53.0                8.8 +/-    0.39      10.7 +/-    0.39  0.060 / 0.050
G20     288.2          58.1               11.2 +/-    1.20      12.9 +/-    1.20  0.060 / 0.060
G21     348.7          67.0                9.8 +/-    0.62      10.6 +/-    0.62  0.070 / 0.260
G26     258.4          10.9               10.6 +/-    1.83      29.1 +/-    1.83  0.070 / 0.270
G27     321.2          13.4                8.9 +/-    3.45      22.9 +/-    3.45  0.030 / 0.050
G29     166.3          38.9               11.8 +/-    0.63      17.4 +/-    0.63  0.030 / 0.050