PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-20:12:40
G10     261.4          36.2               15.8 +/-    1.01      24.5 +/-    1.01  0.050 / 0.050
G13     44.4           21.3               11.5 +/-    2.72      24.4 +/-    2.72  0.050 / 0.050
G15     66.6           53.2               13.2 +/-    0.34      16.0 +/-    0.34  0.080 / 0.220
G16     284.0          14.2               12.1 +/-    1.30      30.6 +/-    1.30  0.160 / 0.310
G20     289.0          58.2               13.6 +/-    1.46      15.7 +/-    1.46  0.030 / 0.040
G21     349.8          67.4               13.2 +/-    0.35      14.2 +/-    0.35  0.030 / 0.050
G24     126.5          10.7               13.1 +/-   33.84      36.1 +/-   33.84  0.110 / 0.340
G27     321.0          14.0               10.2 +/-    2.05      25.9 +/-    2.05  0.150 / 0.450
G29     166.4          37.9               15.4 +/-    1.17      23.1 +/-    1.17  0.080 / 0.100