PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-18:13:10
G01     243.2          30.8               12.9 +/-    1.68      22.2 +/-    1.68  0.020 / 0.050
G03     312.8          53.9                7.9 +/-    0.62       9.6 +/-    0.62  0.030 / 0.050
G14     67.2           37.4                8.3 +/-    0.59      12.6 +/-    0.59  0.040 / 0.030
G16     160.1          25.0               13.9 +/-    1.15      27.1 +/-    1.15  0.030 / 0.040
G22     287.7          73.4                9.8 +/-    0.61      10.2 +/-    0.61  0.080 / 0.260
G23     292.9          25.0               10.6 +/-    1.05      20.7 +/-    1.05  0.090 / 0.220
G26     128.0          44.2               12.2 +/-    1.13      16.7 +/-    1.13  0.050 / 0.150
G31     40.4           50.3                6.7 +/-    0.32       8.4 +/-    0.32  0.040 / 0.120
G32     84.0           17.7                9.2 +/-    0.62      21.4 +/-    0.62  0.050 / 0.040