PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/01-02:57:50
G08     307.8          20.1                9.4 +/-    1.86      20.6 +/-    1.86  0.030 / 0.060
G10     330.6          59.7                8.2 +/-    1.30       9.3 +/-    1.30  0.040 / 0.060
G14     218.4          33.0               10.9 +/-    1.26      18.0 +/-    1.26  0.050 / 0.090
G15     46.7           12.8                5.0 +/-    2.23      13.2 +/-    2.23  0.060 / 0.100
G18     36.5           60.2                8.3 +/-    0.62       9.4 +/-    0.62  0.030 / 0.040
G21     134.1          56.8               10.3 +/-    1.27      12.0 +/-    1.27  0.040 / 0.040
G24     75.1           30.6                8.9 +/-    0.58      15.4 +/-    0.58  0.070 / 0.150
G27     272.4          37.5               12.1 +/-    1.06      18.4 +/-    1.06  0.070 / 0.130
G32     223.9          51.7               12.6 +/-    1.89      15.6 +/-    1.89  0.060 / 0.080