PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-03:12:50
G08     303.0          21.4                8.6 +/-    2.48      18.3 +/-    2.48  0.090 / 0.070
G10     346.7          61.8                9.6 +/-    0.71      10.7 +/-    0.71  0.060 / 0.080
G14     222.5          35.2               13.4 +/-    1.84      21.2 +/-    1.84  0.040 / 0.040
G20     19.1           64.9               10.7 +/-    1.16      11.7 +/-    1.16  0.040 / 0.050
G21     140.7          51.0               11.8 +/-    0.30      14.7 +/-    0.30  0.080 / 0.090
G24     64.6           28.2                7.2 +/-    0.80      13.1 +/-    0.80  0.080 / 0.080
G27     265.7          35.7               12.1 +/-    1.58      18.9 +/-    1.58  0.080 / 0.130
G32     231.2          61.3               10.6 +/-    1.83      11.9 +/-    1.83  0.060 / 0.110