PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-21:42:50
G10     293.5          50.6                8.5 +/-    1.04      10.6 +/-    1.04  0.060 / 0.100
G15     47.6           35.7                7.0 +/-    0.56      11.0 +/-    0.56  0.060 / 0.090
G20     345.4          65.4                6.6 +/-    0.54       7.2 +/-    0.54  0.050 / 0.040
G21     86.2           75.6                8.6 +/-    0.72       8.9 +/-    0.72  0.050 / 0.040
G24     97.8           25.2                9.4 +/-    1.29      18.2 +/-    1.29  0.080 / 0.130
G27     304.3          32.2                9.4 +/-    1.08      15.7 +/-    1.08  0.070 / 0.150
G29     168.4          10.6               12.8 +/-    3.84      35.3 +/-    3.84  0.050 / 0.080
G32     209.2          30.2               11.5 +/-    1.82      20.1 +/-    1.82  0.050 / 0.080