PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-13:58:10
G01     123.5          14.3                8.3 +/-    1.60      20.9 +/-    1.60  0.070 / 0.110
G07     72.1           66.1                9.0 +/-    0.62       9.7 +/-    0.62  0.100 / 0.100
G08     47.2           34.5                7.5 +/-    1.30      12.1 +/-    1.30  0.090 / 0.360
G09     176.3          30.5                9.6 +/-    1.96      16.7 +/-    1.96  0.090 / 0.490
G11     110.3          36.0                9.8 +/-    0.70      15.3 +/-    0.70  0.030 / 0.030
G13     320.7          13.2                6.6 +/-    3.01      17.2 +/-    3.01  0.030 / 0.040
G17     199.8          21.2                8.9 +/-    1.52      19.1 +/-    1.52  0.030 / 0.030
G28     283.1          54.8                7.8 +/-    2.96       9.3 +/-    2.96  0.030 / 0.030
G30     334.8          61.7                8.0 +/-    0.51       8.9 +/-    0.51  0.150 / 0.170