PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-22:28:10
G10     278.6          45.4               11.2 +/-    0.93      15.0 +/-    0.93  0.080 / 0.170
G15     51.4           41.4                8.6 +/-    0.71      12.2 +/-    0.71  0.080 / 0.140
G20     318.2          63.7                9.1 +/-    0.78      10.0 +/-    0.78  0.070 / 0.050
G21     30.1           76.2               10.0 +/-    0.64      10.3 +/-    0.64  0.070 / 0.060
G24     113.5          19.5               11.5 +/-    1.45      25.5 +/-    1.45  0.050 / 0.050
G27     313.9          25.5                9.9 +/-    2.21      19.0 +/-    2.21  0.060 / 0.050
G29     167.9          21.6               11.7 +/-    1.46      24.6 +/-    1.46  0.100 / 0.230
G32     205.7          17.4               16.1 +/-    3.53      37.9 +/-    3.53  0.090 / 0.200