PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-19:57:30
G08     306.5          20.3                8.8 +/-    1.56      19.2 +/-    1.56  0.100 / 0.070
G10     335.9          60.5                9.3 +/-    0.45      10.5 +/-    0.45  0.080 / 0.080
G14     219.8          34.3               12.3 +/-    1.93      19.8 +/-    1.93  0.040 / 0.050
G18     44.9           57.4               10.4 +/-    0.46      12.1 +/-    0.46  0.030 / 0.040
G21     136.5          50.3               12.2 +/-    0.71      15.3 +/-    0.71  0.090 / 0.070
G24     72.2           30.4               10.0 +/-    1.17      17.3 +/-    1.17  0.070 / 0.080
G27     269.4          37.0               10.2 +/-    1.76      15.6 +/-    1.76  0.090 / 0.140
G32     226.1          52.9               12.3 +/-    2.64      15.0 +/-    2.64  0.070 / 0.150