PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-03:42:40
G08     306.1          20.7                8.0 +/-    3.06      17.3 +/-    3.06  0.150 / 0.070
G10     334.2          60.2                5.9 +/-    0.33       6.6 +/-    0.33  0.110 / 0.090
G14     219.4          34.7               10.3 +/-    1.53      16.4 +/-    1.53  0.030 / 0.030
G15     47.1           11.7                4.0 +/-    2.72      10.8 +/-    2.72  0.030 / 0.020
G18     39.1           59.6                6.5 +/-    0.54       7.5 +/-    0.54  0.030 / 0.040
G21     135.9          55.2                7.4 +/-    0.29       8.7 +/-    0.29  0.030 / 0.040
G24     73.0           30.4                6.2 +/-    1.01      10.8 +/-    1.01  0.050 / 0.060
G27     270.0          37.1                7.5 +/-    1.81      11.4 +/-    1.81  0.080 / 0.070
G32     225.6          53.8                9.7 +/-    2.79      11.7 +/-    2.79  0.080 / 0.170