PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/18-21:43:00
G03     212.2          58.1                8.8 +/-    0.84      10.1 +/-    0.84  0.060 / 0.070
G07     256.4          14.7                9.1 +/-    2.06      22.8 +/-    2.06  0.060 / 0.060
G09     309.7          26.6                6.5 +/-    1.51      12.3 +/-    1.51  0.150 / 0.150
G16     102.7          65.3                8.8 +/-    1.21       9.6 +/-    1.21  0.160 / 0.210
G22     188.6          42.6                8.6 +/-    0.63      12.0 +/-    0.63  0.030 / 0.030
G23     329.7          59.4                7.6 +/-    0.72       8.7 +/-    0.72  0.030 / 0.030
G26     54.7           44.5                6.3 +/-    0.86       8.6 +/-    0.86  0.070 / 0.280
G27     133.7          10.5                0.1 +/-   32.97       0.3 +/-   32.97  0.080 / 0.200
G31     58.7           11.3                6.8 +/-    1.79      18.5 +/-    1.79  0.190 / 0.260