PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-19:43:00
G01     229.4          19.8               11.5 +/-    3.30      25.3 +/-    3.30  0.030 / 0.030
G03     292.9          67.0                9.3 +/-    0.58      10.0 +/-    0.58  0.030 / 0.040
G14     82.8           27.4                8.1 +/-    1.64      15.0 +/-    1.64  0.080 / 0.160
G16     151.6          40.5                3.7 +/-    0.58       5.3 +/-    0.58  0.080 / 0.180
G22     225.1          73.4               10.3 +/-    0.51      10.7 +/-    0.51  0.050 / 0.080
G23     304.8          35.1                9.8 +/-    1.48      15.5 +/-    1.48  0.050 / 0.070
G26     104.8          53.3                9.8 +/-    0.65      11.9 +/-    0.65  0.070 / 0.080
G31     43.7           35.7                7.2 +/-    1.12      11.4 +/-    1.12  0.050 / 0.060