PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/20-13:42:40
G01     310.0          30.9                5.5 +/-    0.92       9.4 +/-    0.92  0.040 / 0.050
G10     102.3          42.7                6.5 +/-    0.71       9.0 +/-    0.71  0.040 / 0.030
G11     288.4          26.7                5.9 +/-    2.14      11.2 +/-    2.14  0.170 / 0.190
G14     341.3          68.8                3.3 +/-    0.61       3.5 +/-    0.61  0.180 / 0.180
G22     309.2          26.0                3.7 +/-    1.23       7.1 +/-    1.23  0.030 / 0.030
G25     86.4           15.7                6.7 +/-    2.17      16.3 +/-    2.17  0.030 / 0.030
G31     166.9          62.5                7.3 +/-    0.41       8.1 +/-    0.41  0.100 / 0.130
G32     33.8           53.9                4.3 +/-    1.43       5.2 +/-    1.43  0.130 / 0.110