PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/23-04:43:10
G08     275.9          21.8                7.6 +/-    2.09      16.1 +/-    2.09  0.030 / 0.030
G10     38.2           62.3                4.6 +/-    1.32       5.2 +/-    1.32  0.020 / 0.030
G11     315.9          12.5                7.0 +/-    3.34      18.6 +/-    3.34  0.160 / 0.220
G14     248.9          60.8                7.1 +/-    1.58       8.0 +/-    1.58  0.130 / 0.210
G18     79.6           44.4                6.1 +/-    0.68       8.2 +/-    0.68  0.080 / 0.160
G21     151.9          25.6                9.9 +/-    3.20      19.0 +/-    3.20  0.070 / 0.150
G24     45.6           18.6                6.3 +/-    1.44      14.4 +/-    1.44  0.030 / 0.030
G27     238.6          22.4                6.5 +/-    6.50      13.5 +/-    6.50  0.030 / 0.040
G31     180.2          20.1                7.5 +/-    2.40      16.6 +/-    2.40  0.070 / 0.090
G32     292.4          75.6                6.2 +/-    1.04       6.4 +/-    1.04  0.070 / 0.080