PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-17:43:00
G01     250.1          34.7                9.5 +/-    1.18      15.2 +/-    1.18  0.090 / 0.340
G03     315.5          47.9                6.6 +/-    1.72       8.6 +/-    1.72  0.030 / 0.040
G11     239.0          12.3               10.9 +/-    3.37      28.9 +/-    3.37  0.030 / 0.050
G14     60.3           41.4                9.8 +/-    1.55      13.9 +/-    1.55  0.030 / 0.050
G16     163.0          18.9               -8.1 +/-   11.07     -18.4 +/-   11.07  0.030 / 0.050
G22     302.1          68.5                9.2 +/-    0.96       9.8 +/-    0.96  0.050 / 0.100
G23     288.0          21.1                8.7 +/-    2.41      18.7 +/-    2.41  0.050 / 0.100
G26     134.7          39.1               14.0 +/-    1.23      20.7 +/-    1.23  0.080 / 0.280
G31     40.7           56.8                8.8 +/-    0.99      10.3 +/-    0.99  0.080 / 0.260
G32     78.6           21.6                9.6 +/-    1.97      20.3 +/-    1.97  0.080 / 0.120