PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-03:27:50
G08     307.2          19.9                7.2 +/-    1.20      15.9 +/-    1.20  0.060 / 0.090
G10     337.8          60.8                9.6 +/-    0.67      10.8 +/-    0.67  0.080 / 0.080
G14     219.9          31.0               13.9 +/-    2.08      23.9 +/-    2.08  0.040 / 0.050
G15     47.5           10.0                8.2 +/-    3.54      22.8 +/-    3.54  0.030 / 0.040
G20     17.7           64.6               17.1 +/-    0.86      18.7 +/-    0.86  0.080 / 0.090
G21     137.1          55.2               12.0 +/-    0.33      14.3 +/-    0.33  0.080 / 0.090
G24     69.5           29.2                8.4 +/-    1.09      14.9 +/-    1.09  0.110 / 0.200
G27     271.1          36.8               10.7 +/-    2.14      16.4 +/-    2.14  0.100 / 0.170
G32     226.2          57.1               11.6 +/-    2.60      13.5 +/-    2.60  0.100 / 0.180