PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-20:27:50
G01     305.1          34.4                9.2 +/-    0.79      14.7 +/-    0.79  0.160 / 0.130
G10     108.2          39.1               10.0 +/-    0.65      14.8 +/-    0.65  0.080 / 0.110
G11     280.1          28.2                8.6 +/-    1.05      15.7 +/-    1.05  0.040 / 0.030
G14     2.1            65.7                7.8 +/-    0.58       8.5 +/-    0.58  0.030 / 0.030
G18     119.0          11.3               10.4 +/-    1.55      28.1 +/-    1.55  0.050 / 0.040
G22     310.2          27.0                9.4 +/-    1.87      17.5 +/-    1.87  0.050 / 0.030
G25     79.6           17.2                9.9 +/-    2.36      23.3 +/-    2.36  0.030 / 0.040
G31     168.4          66.1               11.2 +/-    0.45      12.1 +/-    0.45  0.030 / 0.030
G32     37.5           51.6                7.8 +/-    1.24       9.7 +/-    1.24  0.110 / 0.090