PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-18:42:30
G02     59.9           33.2                7.8 +/-    0.38      12.9 +/-    0.38  0.110 / 0.380
G05     55.5           60.0                9.0 +/-    0.58      10.2 +/-    0.58  0.150 / 0.370
G12     183.8          30.6               10.9 +/-    2.01      18.9 +/-    2.01  0.070 / 0.170
G13     124.8          16.5               12.4 +/-    1.06      29.6 +/-    1.06  0.080 / 0.140
G15     162.9          14.1               12.3 +/-    1.96      31.3 +/-    1.96  0.040 / 0.080
G21     273.3          17.9               11.5 +/-    2.42      26.7 +/-    2.42  0.040 / 0.060
G25     234.7          50.6                9.5 +/-    1.03      11.8 +/-    1.03  0.070 / 0.310
G29     330.3          56.7                8.2 +/-    1.21       9.6 +/-    1.21  0.110 / 0.260