PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-19:42:40
G03     225.4          66.1               10.6 +/-    0.67      11.5 +/-    0.67  0.040 / 0.040
G09     304.4          18.9                8.5 +/-    1.85      19.2 +/-    1.85  0.040 / 0.050
G14     101.4          13.9               10.9 +/-    1.51      27.7 +/-    1.51  0.200 / 0.160
G16     124.1          60.8               11.7 +/-    0.62      13.1 +/-    0.62  0.280 / 0.180
G22     192.0          52.3               11.4 +/-    0.99      14.0 +/-    0.99  0.030 / 0.030
G23     322.1          52.0               10.3 +/-    0.59      12.6 +/-    0.59  0.030 / 0.030
G26     65.3           50.3               10.0 +/-    1.41      12.6 +/-    1.41  0.120 / 0.380
G31     53.6           17.5                8.6 +/-    4.21      20.2 +/-    4.21  0.130 / 0.320