PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-01:57:50
G08     308.9          19.6                5.2 +/-    2.72      11.4 +/-    2.72  0.090 / 0.060
G10     328.4          59.3                5.8 +/-    0.95       6.6 +/-    0.95  0.130 / 0.070
G14     217.7          31.8               11.2 +/-    1.41      18.9 +/-    1.41  0.340 / 0.210
G15     46.5           13.2                5.1 +/-    2.20      13.4 +/-    2.20  0.060 / 0.060
G18     35.1           60.5               10.6 +/-    2.13      12.0 +/-    2.13  0.040 / 0.030
G21     132.9          57.6               10.0 +/-    0.52      11.6 +/-    0.52  0.040 / 0.030
G24     76.6           30.6                7.8 +/-    1.22      13.6 +/-    1.22  0.050 / 0.050
G27     274.0          37.7                8.8 +/-    2.97      13.4 +/-    2.97  0.070 / 0.050
G32     222.8          49.9                7.6 +/-    2.21       9.6 +/-    2.21  0.080 / 0.190