PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-04:58:00
G08     262.6          15.9                8.8 +/-    1.66      21.5 +/-    1.66  0.160 / 0.610
G10     70.6           56.0                5.9 +/-    1.93       6.9 +/-    1.93  0.110 / 0.490
G11     307.7          20.3                9.2 +/-    2.54      20.1 +/-    2.54  0.040 / 0.060
G14     275.3          66.9                8.8 +/-    0.69       9.5 +/-    0.69  0.040 / 0.050
G18     309.3          35.8                8.4 +/-    1.82      13.1 +/-    1.82  0.030 / 0.040
G20     93.7           45.3                6.9 +/-    1.42       9.3 +/-    1.42  0.030 / 0.040
G21     155.7          11.2                7.2 +/-    1.89      19.6 +/-    1.89  0.220 / 0.380
G27     228.0          12.4               10.7 +/-    5.90      28.4 +/-    5.90  0.230 / 0.500
G31     175.4          37.7               10.1 +/-    1.62      15.3 +/-    1.62  0.140 / 0.400
G32     0.3            70.3                7.5 +/-    0.74       8.0 +/-    0.74  0.100 / 0.380