PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-16:12:30
G01     313.0          27.8                6.4 +/-    1.10      11.7 +/-    1.10  0.130 / 0.220
G10     97.2           45.8                7.9 +/-    0.70      10.5 +/-    0.70  0.100 / 0.250
G11     292.9          26.1                7.4 +/-    2.15      14.1 +/-    2.15  0.030 / 0.040
G14     333.1          69.9                7.3 +/-    0.56       7.7 +/-    0.56  0.030 / 0.040
G22     306.9          20.8                6.5 +/-    1.42      14.0 +/-    1.42  0.040 / 0.040
G25     90.3           14.1                9.0 +/-    1.16      22.8 +/-    1.16  0.030 / 0.030
G31     171.4          56.8                9.8 +/-    0.59      11.5 +/-    0.59  0.160 / 0.250
G32     27.9           57.7                6.8 +/-    1.02       7.8 +/-    1.02  0.170 / 0.290