PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-03:12:40
G08     289.5          23.1                9.6 +/-    0.74      19.5 +/-    0.74  0.130 / 0.120
G10     15.1           63.1                6.5 +/-    0.66       7.1 +/-    0.66  0.120 / 0.130
G14     232.7          47.3               11.0 +/-    1.95      14.3 +/-    1.95  0.050 / 0.080
G18     317.7          12.5                5.7 +/-    2.04      15.0 +/-    2.04  0.060 / 0.080
G20     39.8           64.1                9.9 +/-    0.93      10.9 +/-    0.93  0.070 / 0.110
G21     148.4          38.0                9.5 +/-    0.93      14.3 +/-    0.93  0.070 / 0.110
G24     52.2           23.1                6.8 +/-    2.40      13.8 +/-    2.40  0.080 / 0.200
G27     251.0          29.9               10.2 +/-    1.62      17.9 +/-    1.62  0.110 / 0.320
G31     181.8          10.9               -3.6 +/-   17.63      -9.8 +/-   17.63  0.110 / 0.140
G32     256.4          72.2                8.1 +/-    0.35       8.5 +/-    0.35  0.090 / 0.120