PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-05:13:00
G08     268.7          18.4                9.9 +/-    1.70      22.7 +/-    1.70  0.050 / 0.050
G10     59.5           58.7                6.6 +/-    1.00       7.6 +/-    1.00  0.050 / 0.050
G14     261.3          63.1                9.3 +/-    0.69      10.3 +/-    0.69  0.310 / 0.230
G18     313.0          30.7                5.7 +/-    0.82       9.8 +/-    0.82  0.240 / 0.210
G20     89.1           45.6                7.8 +/-    1.13      10.4 +/-    1.13  0.070 / 0.330
G21     154.8          17.0                7.5 +/-    1.39      17.9 +/-    1.39  0.070 / 0.270
G24     39.6           9.8                 4.3 +/-    2.49      12.0 +/-    2.49  0.110 / 0.160
G27     232.5          16.5                8.9 +/-    2.10      21.4 +/-    2.10  0.140 / 0.210
G31     176.8          31.2               10.2 +/-    1.55      17.4 +/-    1.55  0.110 / 0.200
G32     343.0          74.2                6.8 +/-    0.33       7.0 +/-    0.33  0.130 / 0.270