PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-15:12:40
G02     65.6           27.2                7.7 +/-    1.66      14.4 +/-    1.66  0.030 / 0.030
G05     51.8           56.9                8.2 +/-    0.41       9.6 +/-    0.41  0.030 / 0.040
G12     184.8          26.8                9.3 +/-    0.74      17.5 +/-    0.74  0.130 / 0.220
G13     124.4          19.5               12.7 +/-    1.30      28.2 +/-    1.30  0.210 / 0.200
G15     159.3          17.7               11.7 +/-    2.08      27.2 +/-    2.08  0.030 / 0.040
G20     213.0          65.8               10.5 +/-    0.75      11.4 +/-    0.75  0.040 / 0.030
G21     277.9          24.5                8.0 +/-    1.64      15.8 +/-    1.64  0.100 / 0.130
G25     226.7          46.5               10.4 +/-    3.00      13.7 +/-    3.00  0.100 / 0.120
G29     339.7          66.4                7.8 +/-    0.56       8.4 +/-    0.56  0.100 / 0.120