PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/21-23:12:40
G10     276.3          43.3                7.5 +/-    0.96      10.4 +/-    0.96  0.070 / 0.150
G13     38.8           11.7                6.7 +/-    1.82      18.0 +/-    1.82  0.080 / 0.170
G15     53.9           45.7                5.4 +/-    0.83       7.2 +/-    0.83  0.050 / 0.050
G20     275.5          34.8               17.2 +/-    0.73      27.4 +/-    0.73  0.040 / 0.040
G21     23.6           75.9                7.6 +/-    0.67       7.8 +/-    0.67  0.050 / 0.080
G24     111.6          19.0                9.8 +/-    2.42      22.2 +/-    2.42  0.060 / 0.090
G27     314.4          24.7                6.8 +/-    1.05      13.3 +/-    1.05  0.150 / 0.250
G29     169.0          23.9                9.0 +/-    1.50      18.0 +/-    1.50  0.100 / 0.250
G32     205.2          18.3               12.9 +/-    1.06      29.5 +/-    1.06  0.190 / 0.360