PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-15:28:00
G10     256.7          33.3                7.5 +/-    2.00      12.3 +/-    2.00  0.290 / 0.250
G13     47.5           24.5                7.0 +/-    1.92      13.8 +/-    1.92  0.050 / 0.040
G15     70.2           53.2                7.7 +/-    0.38       9.4 +/-    0.38  0.060 / 0.050
G20     283.1          57.1                8.3 +/-    1.89       9.7 +/-    1.89  0.050 / 0.040
G21     344.2          64.8                6.8 +/-    0.44       7.5 +/-    0.44  0.050 / 0.040
G26     262.3          12.7                6.5 +/-    5.32      17.1 +/-    5.32  0.070 / 0.220
G27     322.2          10.3              -15.6 +/-   10.06     -43.1 +/-   10.06  0.070 / 0.180
G29     165.6          43.8                9.1 +/-    0.82      12.5 +/-    0.82  0.090 / 0.090