PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-13:57:40
G01     314.1          26.5                6.7 +/-    1.22      12.7 +/-    1.22  0.140 / 0.270
G10     94.9           47.0                8.8 +/-    0.72      11.5 +/-    0.72  0.120 / 0.190
G11     295.2          25.3                6.6 +/-    1.41      12.9 +/-    1.41  0.050 / 0.050
G14     324.4          70.1                7.2 +/-    0.49       7.6 +/-    0.49  0.040 / 0.050
G22     306.5          20.9                6.5 +/-    1.91      14.0 +/-    1.91  0.030 / 0.030
G25     92.3           13.3                9.6 +/-    1.91      24.9 +/-    1.91  0.030 / 0.040
G31     171.1          55.4               10.5 +/-    0.45      12.5 +/-    0.45  0.140 / 0.190
G32     26.4           58.6                7.6 +/-    1.14       8.7 +/-    1.14  0.110 / 0.210