PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/26-16:27:50
G01     320.6          12.6                5.4 +/-    2.26      14.3 +/-    2.26  0.110 / 0.470
G08     264.7          16.1                7.9 +/-    2.19      19.1 +/-    2.19  0.110 / 0.460
G10     68.8           56.9                5.3 +/-    0.78       6.1 +/-    0.78  0.030 / 0.040
G11     309.7          18.3                6.9 +/-    1.99      15.8 +/-    1.99  0.030 / 0.030
G14     276.7          67.8                6.3 +/-    0.51       6.8 +/-    0.51  0.130 / 0.320
G27     227.5          12.5                7.5 +/-    4.00      19.9 +/-    4.00  0.120 / 0.230
G31     177.5          35.1                9.9 +/-    1.30      15.6 +/-    1.30  0.050 / 0.090
G32     353.5          71.5                6.2 +/-    0.50       6.6 +/-    0.50  0.050 / 0.080