PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-23:57:40
G08     307.9          20.0                8.2 +/-    2.12      18.0 +/-    2.12  0.030 / 0.030
G10     330.8          59.7                8.4 +/-    0.73       9.5 +/-    0.73  0.030 / 0.030
G14     218.4          32.8               12.1 +/-    1.62      20.0 +/-    1.62  0.050 / 0.050
G15     46.8           11.1                8.5 +/-    2.59      23.1 +/-    2.59  0.050 / 0.060
G18     38.7           59.4                9.8 +/-    0.57      11.2 +/-    0.57  0.060 / 0.080
G21     134.2          55.5               11.0 +/-    0.61      13.1 +/-    0.61  0.070 / 0.080
G24     75.2           30.6               10.4 +/-    1.16      18.0 +/-    1.16  0.110 / 0.190
G27     272.4          37.5                9.7 +/-    2.51      14.8 +/-    2.51  0.130 / 0.160
G32     223.8          49.9               10.6 +/-    2.28      13.4 +/-    2.28  0.030 / 0.050