PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-01:27:40
G10     274.1          42.1               12.0 +/-    1.45      16.9 +/-    1.45  0.090 / 0.130
G13     39.4           13.3                7.9 +/-    1.81      20.4 +/-    1.81  0.110 / 0.100
G15     54.6           45.9                9.7 +/-    0.77      12.9 +/-    0.77  0.040 / 0.050
G20     287.6          50.9               16.2 +/-    0.92      20.2 +/-    0.92  0.050 / 0.040
G21     17.9           75.1               11.4 +/-    0.65      11.8 +/-    0.65  0.100 / 0.330
G24     113.8          17.9               11.6 +/-    1.84      26.9 +/-    1.84  0.150 / 0.380
G27     315.4          23.6                9.4 +/-    1.69      19.0 +/-    1.69  0.090 / 0.150
G29     168.9          25.6               11.5 +/-    2.18      22.2 +/-    2.18  0.100 / 0.170
G32     204.9          16.6               14.2 +/-    3.73      34.1 +/-    3.73  0.040 / 0.030