PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-19:27:50
G02     87.7           12.3                9.1 +/-    1.73      24.1 +/-    1.73  0.050 / 0.110
G05     45.4           27.6                6.7 +/-    0.69      12.3 +/-    0.69  0.060 / 0.120
G13     89.0           34.4                9.5 +/-    0.98      15.3 +/-    0.98  0.130 / 0.230
G15     139.8          43.8               12.3 +/-    0.78      16.8 +/-    0.78  0.130 / 0.150
G20     239.3          28.9               13.4 +/-    2.36      24.0 +/-    2.36  0.080 / 0.130
G21     302.8          39.0                9.5 +/-    1.04      14.0 +/-    1.04  0.080 / 0.120
G25     205.9          21.0               11.4 +/-    2.08      24.5 +/-    2.08  0.130 / 0.420
G26     298.9          19.6                9.8 +/-    1.30      21.7 +/-    1.30  0.130 / 0.370
G29     120.1          85.0               10.6 +/-    1.12      10.6 +/-    1.12  0.060 / 0.120