PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/09-15:57:30
G10     285.5          47.7                8.1 +/-    2.03      10.5 +/-    2.03  0.040 / 0.040
G15     48.8           37.4                5.8 +/-    1.21       8.9 +/-    1.21  0.040 / 0.040
G20     331.3          65.0                7.5 +/-    0.64       8.2 +/-    0.64  0.080 / 0.130
G21     71.4           75.6                7.8 +/-    0.79       8.1 +/-    0.79  0.090 / 0.160
G24     101.8          22.5                8.8 +/-    1.76      18.1 +/-    1.76  0.090 / 0.100
G27     310.7          27.8                6.1 +/-    1.28      11.1 +/-    1.28  0.070 / 0.080
G29     167.7          14.6                9.6 +/-    2.57      24.2 +/-    2.57  0.190 / 0.240
G32     207.5          22.7                9.6 +/-    1.37      19.8 +/-    1.37  0.160 / 0.220