PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-23:13:10
G10     272.5          41.4                9.3 +/-    1.71      13.3 +/-    1.71  0.170 / 0.180
G13     39.8           14.3                7.1 +/-    3.42      18.0 +/-    3.42  0.160 / 0.130
G15     56.6           48.3                8.4 +/-    1.09      10.8 +/-    1.09  0.050 / 0.040
G20     273.0          33.8                5.8 +/-    0.54       9.5 +/-    0.54  0.040 / 0.030
G21     12.7           74.3                9.9 +/-    0.66      10.2 +/-    0.66  0.110 / 0.210
G24     114.5          17.2               10.5 +/-    1.44      24.8 +/-    1.44  0.100 / 0.170
G27     316.3          22.4                8.8 +/-    2.06      18.3 +/-    2.06  0.130 / 0.310
G29     168.8          27.2               10.4 +/-    1.27      19.3 +/-    1.27  0.120 / 0.360
G32     204.6          15.3               12.9 +/-    2.80      31.8 +/-    2.80  0.030 / 0.040