PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-16:12:40
G05     46.9           23.2                7.9 +/-    1.43      16.1 +/-    1.43  0.120 / 0.100
G13     85.4           37.0               11.4 +/-    1.20      17.5 +/-    1.20  0.100 / 0.230
G15     130.9          48.1               14.5 +/-    0.98      18.7 +/-    0.98  0.080 / 0.060
G18     240.4          38.7               11.0 +/-    1.76      16.4 +/-    1.76  0.080 / 0.070
G20     17.1           74.0                9.4 +/-    0.53       9.7 +/-    0.53  0.080 / 0.210
G21     310.3          46.4                8.9 +/-    0.80      11.8 +/-    0.80  0.090 / 0.150
G25     201.9          15.1               12.4 +/-    3.30      30.8 +/-    3.30  0.040 / 0.040
G26     297.3          19.0                6.8 +/-    1.27      15.4 +/-    1.27  0.040 / 0.030
G29     145.6          73.1               12.0 +/-    0.77      12.5 +/-    0.77  0.050 / 0.080