PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-15:58:10
G01     306.5          33.5                8.9 +/-    1.10      14.5 +/-    1.10  0.040 / 0.030
G10     106.8          39.9               10.4 +/-    1.05      15.1 +/-    1.05  0.040 / 0.040
G11     284.0          27.1                6.6 +/-    1.15      12.3 +/-    1.15  0.060 / 0.140
G14     354.6          67.0                7.5 +/-    0.80       8.0 +/-    0.80  0.070 / 0.140
G22     310.3          27.8                5.2 +/-    1.61       9.5 +/-    1.61  0.100 / 0.300
G25     82.1           16.9               10.2 +/-    1.89      24.1 +/-    1.89  0.100 / 0.290
G31     164.6          66.4               13.1 +/-    1.17      14.1 +/-    1.17  0.060 / 0.050
G32     37.7           51.3                9.0 +/-    1.14      11.2 +/-    1.14  0.080 / 0.070