PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-12:57:40
G01     313.8          26.9                3.1 +/-    1.75       5.8 +/-    1.75  0.040 / 0.050
G10     95.7           46.5                3.4 +/-    0.46       4.4 +/-    0.46  0.040 / 0.050
G11     294.1          25.7                4.5 +/-    1.16       8.7 +/-    1.16  0.070 / 0.160
G14     324.6          70.0                3.7 +/-    0.56       3.9 +/-    0.56  0.080 / 0.180
G18     292.3          46.4                4.5 +/-    1.58       5.9 +/-    1.58  0.100 / 0.290
G22     307.0          22.1                2.1 +/-    2.47       4.5 +/-    2.47  0.100 / 0.310
G25     91.7           13.6                5.4 +/-    1.22      14.0 +/-    1.22  0.030 / 0.040
G31     170.3          56.4                8.3 +/-    0.75       9.7 +/-    0.75  0.030 / 0.040
G32     27.5           58.0                2.9 +/-    0.40       3.3 +/-    0.40  0.050 / 0.060