PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/30-04:13:00
G08     277.0          22.0                6.9 +/-    1.24      14.4 +/-    1.24  0.060 / 0.060
G10     35.9           62.5                3.3 +/-    0.66       3.7 +/-    0.66  0.060 / 0.080
G11     316.4          11.6                2.8 +/-   12.25       7.5 +/-   12.25  0.030 / 0.040
G14     247.2          60.0                8.3 +/-    1.00       9.5 +/-    1.00  0.030 / 0.030
G18     78.6           44.9               -5.5 +/-   37.21      -7.5 +/-   37.21  0.060 / 0.120
G21     151.6          26.6                7.5 +/-    1.22      14.2 +/-    1.22  0.060 / 0.140
G24     46.3           19.3                3.0 +/-    0.72       6.6 +/-    0.72  0.080 / 0.130
G27     239.5          23.1                6.1 +/-    2.07      12.4 +/-    2.07  0.080 / 0.140
G31     180.6          18.9                6.1 +/-    2.45      13.8 +/-    2.45  0.080 / 0.210
G32     287.0          75.1                5.0 +/-    0.76       5.1 +/-    0.76  0.160 / 0.230