PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/23-00:42:40
G08     270.3          20.0               10.5 +/-    1.24      23.2 +/-    1.24  0.030 / 0.030
G10     50.6           60.7                9.8 +/-    0.64      11.1 +/-    0.64  0.030 / 0.030
G11     313.5          15.4                5.9 +/-    2.75      14.5 +/-    2.75  0.090 / 0.200
G14     259.1          64.7               11.1 +/-    0.58      12.1 +/-    0.58  0.090 / 0.180
G18     87.0           39.4                9.1 +/-    0.95      13.4 +/-    0.95  0.280 / 0.160
G21     153.0          18.4               11.2 +/-    1.17      25.7 +/-    1.17  0.280 / 0.510
G24     42.4           14.8                7.9 +/-    2.61      19.9 +/-    2.61  0.110 / 0.260
G27     234.0          18.6               14.2 +/-    3.44      32.3 +/-    3.44  0.070 / 0.160
G31     180.9          23.6               12.2 +/-    2.21      24.7 +/-    2.21  0.040 / 0.050
G32     307.6          75.0                9.3 +/-    0.63       9.6 +/-    0.63  0.040 / 0.050