PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-18:12:50
G01     243.6          31.1               11.6 +/-    1.88      19.9 +/-    1.88  0.040 / 0.040
G03     313.1          53.5               10.7 +/-    0.79      12.9 +/-    0.79  0.040 / 0.030
G14     66.7           37.7                8.0 +/-    1.75      12.2 +/-    1.75  0.090 / 0.180
G16     160.3          24.5               13.1 +/-    1.54      25.8 +/-    1.54  0.100 / 0.190
G22     289.0          73.1               10.5 +/-    0.38      10.9 +/-    0.38  0.040 / 0.040
G23     292.6          24.7               10.2 +/-    1.19      20.0 +/-    1.19  0.030 / 0.060
G26     128.5          43.8               12.3 +/-    1.15      16.9 +/-    1.15  0.050 / 0.120
G31     40.4           50.7                8.5 +/-    0.76      10.6 +/-    0.76  0.050 / 0.080
G32     83.6           18.0                9.3 +/-    2.44      21.5 +/-    2.44  0.070 / 0.050