PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/19-11:28:00
G01     313.8          26.9                4.4 +/-    2.36       8.3 +/-    2.36  0.040 / 0.060
G10     95.8           46.4                5.0 +/-    0.52       6.6 +/-    0.52  0.040 / 0.060
G11     293.5          26.1                3.3 +/-    1.79       6.3 +/-    1.79  0.130 / 0.300
G14     322.1          69.8                5.0 +/-    0.76       5.3 +/-    0.76  0.110 / 0.280
G18     292.3          46.4                5.9 +/-    1.21       7.8 +/-    1.21  0.030 / 0.050
G22     307.4          23.5                3.3 +/-    1.62       6.6 +/-    1.62  0.040 / 0.040
G25     91.7           13.5                3.7 +/-    1.22       9.5 +/-    1.22  0.070 / 0.150
G31     169.8          56.7                7.9 +/-    1.26       9.2 +/-    1.26  0.070 / 0.180
G32     27.9           57.8                4.8 +/-    0.41       5.6 +/-    0.41  0.090 / 0.190