PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-03:43:00
G08     306.1          20.7                7.6 +/-    2.00      16.4 +/-    2.00  0.040 / 0.030
G10     334.2          60.2                6.3 +/-    0.94       7.1 +/-    0.94  0.030 / 0.040
G14     219.4          34.7               10.1 +/-    2.07      16.1 +/-    2.07  0.050 / 0.080
G15     47.1           11.7                5.2 +/-    1.00      14.1 +/-    1.00  0.040 / 0.050
G18     39.1           59.6                6.7 +/-    0.52       7.7 +/-    0.52  0.120 / 0.230
G21     135.9          55.2                7.3 +/-    1.00       8.7 +/-    1.00  0.100 / 0.200
G24     73.0           30.4                6.3 +/-    0.67      11.0 +/-    0.67  0.050 / 0.080
G27     270.0          37.1                8.6 +/-    1.36      13.1 +/-    1.36  0.060 / 0.080
G32     225.6          53.8                9.8 +/-    0.95      11.8 +/-    0.95  0.060 / 0.090