PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/21-21:42:30
G10     298.9          52.4               10.5 +/-    1.30      12.9 +/-    1.30  0.060 / 0.100
G14     210.5          11.9               12.4 +/-   13.56      33.1 +/-   13.56  0.060 / 0.100
G15     46.7           32.3                8.7 +/-    1.32      14.5 +/-    1.32  0.040 / 0.040
G20     354.5          65.3                8.3 +/-    1.66       9.0 +/-    1.66  0.040 / 0.040
G21     99.1           73.5               11.4 +/-    0.50      11.9 +/-    0.50  0.110 / 0.340
G24     93.8           26.5               12.2 +/-    0.83      23.0 +/-    0.83  0.120 / 0.470
G27     300.6          33.9               10.9 +/-    0.93      17.7 +/-    0.93  0.090 / 0.130
G32     210.7          33.8               12.5 +/-    1.37      20.3 +/-    1.37  0.080 / 0.170