PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-09:27:30
G01     313.0          27.9                4.4 +/-    1.61       8.1 +/-    1.61  0.080 / 0.100
G10     97.4           45.5                5.5 +/-    0.96       7.4 +/-    0.96  0.100 / 0.110
G11     291.4          26.7                4.3 +/-    2.40       8.0 +/-    2.40  0.060 / 0.060
G14     322.1          69.5                2.2 +/-    0.72       2.4 +/-    0.72  0.040 / 0.040
G18     290.3          47.1                4.7 +/-    4.22       6.1 +/-    4.22  0.070 / 0.120
G22     307.7          23.6                4.5 +/-    1.18       9.0 +/-    1.18  0.080 / 0.130
G25     90.3           14.0                3.8 +/-    1.54       9.7 +/-    1.54  0.130 / 0.280
G31     168.6          58.3                6.3 +/-    0.89       7.3 +/-    0.89  0.160 / 0.300
G32     29.7           56.7                4.0 +/-    1.03       4.7 +/-    1.03  0.080 / 0.210