PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/31-12:57:40
G01     310.0          30.9                4.0 +/-    1.42       6.8 +/-    1.42  0.040 / 0.060
G10     102.3          42.7                4.2 +/-    0.37       5.8 +/-    0.37  0.040 / 0.050
G11     288.1          26.9                5.4 +/-    1.17      10.2 +/-    1.17  0.070 / 0.160
G14     340.2          68.8                3.8 +/-    0.49       4.1 +/-    0.49  0.070 / 0.150
G18     284.2          48.4                5.5 +/-    1.14       7.1 +/-    1.14  0.080 / 0.180
G22     309.3          26.6                3.1 +/-    1.33       5.9 +/-    1.33  0.080 / 0.190
G25     86.4           15.7                4.7 +/-    1.13      11.6 +/-    1.13  0.030 / 0.040
G31     166.5          62.6                7.5 +/-    0.93       8.3 +/-    0.93  0.040 / 0.050
G32     34.0           53.8                3.5 +/-    0.74       4.2 +/-    0.74  0.040 / 0.040