PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-01:12:40
G08     304.3          21.4                7.0 +/-    1.40      14.8 +/-    1.40  0.060 / 0.090
G10     341.8          61.3                7.1 +/-    0.43       8.0 +/-    0.43  0.060 / 0.090
G14     220.9          34.0               12.1 +/-    0.82      19.5 +/-    0.82  0.040 / 0.050
G20     333.8          61.5                8.8 +/-    0.47       9.9 +/-    0.47  0.030 / 0.090
G21     138.7          53.6               10.6 +/-    0.62      12.8 +/-    0.62  0.090 / 0.170
G24     66.9           28.6                6.5 +/-    0.93      11.7 +/-    0.93  0.090 / 0.140
G27     269.0          36.4               10.2 +/-    1.21      15.8 +/-    1.21  0.100 / 0.190
G32     228.1          58.9               10.8 +/-    0.64      12.4 +/-    0.64  0.110 / 0.250