PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-13:42:40
G10     106.4          40.1                5.5 +/-    0.54       8.0 +/-    0.54  0.040 / 0.040
G11     284.3          27.1                5.9 +/-    2.10      11.0 +/-    2.10  0.030 / 0.050
G14     350.6          67.5                4.7 +/-    0.39       5.1 +/-    0.39  0.060 / 0.110
G18     118.2          11.4               15.4 +/-    1.86      41.5 +/-    1.86  0.050 / 0.100
G22     310.5          29.1                4.6 +/-    1.29       8.2 +/-    1.29  0.110 / 0.100
G25     82.7           16.8                6.4 +/-    1.94      15.2 +/-    1.94  0.080 / 0.120
G31     163.2          66.6                7.1 +/-    0.44       7.7 +/-    0.44  0.040 / 0.050
G32     37.8           51.2                4.5 +/-    1.22       5.5 +/-    1.22  0.050 / 0.050