PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-18:57:50
G01     314.7          25.6                9.7 +/-    2.00      18.8 +/-    2.00  0.030 / 0.030
G10     93.2           48.0                9.2 +/-    0.54      11.9 +/-    0.54  0.040 / 0.040
G11     294.8          26.2               11.0 +/-    4.12      21.0 +/-    4.12  0.170 / 0.170
G14     327.5          70.6                9.2 +/-    0.58       9.7 +/-    0.58  0.110 / 0.180
G18     110.3          20.5                9.5 +/-    1.14      20.6 +/-    1.14  0.030 / 0.040
G22     305.2          17.2                9.8 +/-    1.60      23.0 +/-    1.60  0.020 / 0.040
G25     92.6           12.8               11.5 +/-    3.09      30.3 +/-    3.09  0.180 / 0.210
G31     174.6          51.9               11.2 +/-    0.68      13.8 +/-    0.68  0.160 / 0.220
G32     22.3           60.7                8.6 +/-    0.67       9.8 +/-    0.67  0.060 / 0.040