PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-19:28:00
G01     243.0          30.7               12.9 +/-    1.74      22.3 +/-    1.74  0.030 / 0.030
G03     312.9          53.1               12.7 +/-    0.55      15.4 +/-    0.55  0.030 / 0.030
G14     67.7           36.8               12.8 +/-    1.06      19.7 +/-    1.06  0.040 / 0.070
G16     160.7          24.7               14.6 +/-    1.32      28.8 +/-    1.32  0.050 / 0.100
G22     288.7          72.8               13.2 +/-    0.75      13.7 +/-    0.75  0.050 / 0.040
G23     292.7          24.5               11.3 +/-    1.42      22.2 +/-    1.42  0.040 / 0.050
G26     128.6          44.1               15.0 +/-    0.41      20.5 +/-    0.41  0.080 / 0.120
G31     40.2           50.8               11.1 +/-    0.67      13.9 +/-    0.67  0.070 / 0.130
G32     84.0           17.9               10.8 +/-    1.77      25.0 +/-    1.77  0.140 / 0.180