PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-03:13:00
G08     303.0          21.4                8.6 +/-    2.38      18.4 +/-    2.38  0.080 / 0.120
G10     346.7          61.8                9.3 +/-    0.84      10.5 +/-    0.84  0.060 / 0.110
G14     222.5          35.2               15.3 +/-    1.27      24.2 +/-    1.27  0.060 / 0.160
G20     19.1           64.9               10.4 +/-    0.73      11.3 +/-    0.73  0.090 / 0.150
G21     140.7          51.0               12.2 +/-    0.85      15.3 +/-    0.85  0.040 / 0.050
G24     64.6           28.2                7.9 +/-    0.99      14.3 +/-    0.99  0.050 / 0.080
G27     265.7          35.7               12.7 +/-    1.66      19.9 +/-    1.66  0.030 / 0.040
G32     231.2          61.3               12.0 +/-    0.80      13.5 +/-    0.80  0.040 / 0.030