PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/16-19:58:00
G02     76.8           20.1                8.5 +/-    2.15      18.7 +/-    2.15  0.050 / 0.060
G05     44.5           40.1                8.7 +/-    0.75      12.6 +/-    0.75  0.050 / 0.070
G12     179.5          10.9               13.7 +/-    4.45      37.4 +/-    4.45  0.030 / 0.030
G13     105.6          29.1               13.1 +/-    1.08      23.3 +/-    1.08  0.020 / 0.030
G15     150.7          31.7               14.2 +/-    1.66      24.0 +/-    1.66  0.180 / 0.170
G20     230.1          17.2               14.4 +/-    1.46      34.0 +/-    1.46  0.110 / 0.140
G21     290.5          30.4               10.0 +/-    1.90      17.4 +/-    1.90  0.090 / 0.140
G25     214.4          33.2               11.7 +/-    0.94      19.3 +/-    0.94  0.090 / 0.160
G26     311.7          15.4                8.6 +/-    1.85      21.2 +/-    1.85  0.100 / 0.190
G29     350.4          77.9               10.6 +/-    0.70      10.8 +/-    0.70  0.090 / 0.230