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                9.5 +/-    1.71      11.7 +/-    1.71  0.030 / 0.030
G14     210.5          11.9                4.5 +/-   25.62      12.2 +/-   25.62  0.030 / 0.030
G15     46.7           32.3                8.6 +/-    1.54      14.3 +/-    1.54  0.110 / 0.580
G20     354.5          65.3                9.7 +/-    0.31      10.5 +/-    0.31  0.170 / 0.560
G21     99.1           73.5               10.7 +/-    0.76      11.1 +/-    0.76  0.070 / 0.090
G24     93.8           26.5               10.5 +/-    1.71      19.9 +/-    1.71  0.080 / 0.090
G27     300.6          33.9                7.8 +/-    2.50      12.6 +/-    2.50  0.070 / 0.130
G32     210.7          33.8               12.0 +/-    1.25      19.4 +/-    1.25  0.110 / 0.140