PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-22:57:30
G10     293.8          51.4                9.3 +/-    1.47      11.6 +/-    1.47  0.070 / 0.110
G15     46.8           31.4                6.6 +/-    0.44      11.3 +/-    0.44  0.070 / 0.090
G20     344.7          65.3                7.2 +/-    0.75       7.9 +/-    0.75  0.050 / 0.050
G21     80.5           76.4                9.7 +/-    1.02       9.9 +/-    1.02  0.050 / 0.040
G24     102.6          25.2               10.1 +/-    1.06      19.6 +/-    1.06  0.050 / 0.050
G27     304.7          32.5                8.0 +/-    1.71      13.4 +/-    1.71  0.040 / 0.040
G29     167.8          10.8               15.4 +/-    4.29      42.2 +/-    4.29  0.070 / 0.170
G32     208.9          28.2               12.4 +/-    1.51      22.5 +/-    1.51  0.070 / 0.140