PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-17:57:40
G01     314.4          26.0                8.0 +/-    1.63      15.2 +/-    1.63  0.140 / 0.140
G10     94.0           47.5               11.0 +/-    0.83      14.3 +/-    0.83  0.090 / 0.170
G11     294.6          26.0               10.5 +/-    3.19      20.0 +/-    3.19  0.090 / 0.150
G14     328.2          70.4                9.9 +/-    0.57      10.4 +/-    0.57  0.130 / 0.140
G18     110.8          19.8                9.4 +/-    1.88      20.7 +/-    1.88  0.050 / 0.050
G22     305.5          18.1                7.9 +/-    2.23      18.3 +/-    2.23  0.040 / 0.040
G25     92.3           13.0               11.3 +/-    3.53      29.4 +/-    3.53  0.170 / 0.250
G31     173.7          53.2               14.1 +/-    0.83      17.2 +/-    0.83  0.140 / 0.190
G32     23.8           60.0                9.5 +/-    0.64      10.8 +/-    0.64  0.040 / 0.030