PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-07:28:00
G08     314.5          15.5                1.6 +/-   16.92       3.9 +/-   16.92  0.080 / 0.280
G10     325.5          58.9               -0.2 +/-   14.96      -0.2 +/-   14.96  0.110 / 0.330
G14     217.0          23.5                4.8 +/-   15.55       9.8 +/-   15.55  0.030 / 0.040
G15     46.3           13.2               -0.5 +/-   14.98      -1.3 +/-   14.98  0.040 / 0.040
G20     63.0           44.1                0.8 +/-   15.03       1.1 +/-   15.03  0.060 / 0.080
G21     130.7          60.5                3.3 +/-   14.20       3.7 +/-   14.20  0.060 / 0.080
G24     77.6           30.0                2.3 +/-   16.09       3.9 +/-   16.09  0.070 / 0.110
G27     278.6          37.8                2.5 +/-    9.86       3.8 +/-    9.86  0.320 / 0.330
G32     220.5          50.9                2.8 +/-   16.04       3.5 +/-   16.04  0.030 / 0.050