PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-00:27:50
G01     305.9          35.4                9.5 +/-    0.91      15.0 +/-    0.91  0.080 / 0.090
G10     106.7          37.8               10.0 +/-    0.67      15.1 +/-    0.67  0.060 / 0.100
G11     282.9          26.8                8.8 +/-    1.24      16.5 +/-    1.24  0.040 / 0.040
G14     351.1          67.7                7.5 +/-    0.63       8.0 +/-    0.63  0.040 / 0.040
G18     275.6          50.4                5.1 +/-    1.85       6.4 +/-    1.85  0.040 / 0.060
G20     121.2          12.6                8.8 +/-    1.53      23.1 +/-    1.53  0.050 / 0.060
G22     310.0          24.7                6.5 +/-    1.30      12.9 +/-    1.30  0.050 / 0.030
G25     82.9           16.4                7.3 +/-    2.30      17.6 +/-    2.30  0.030 / 0.040
G31     162.5          66.3                8.8 +/-    0.28       9.5 +/-    0.28  0.060 / 0.130
G32     36.9           51.9                7.4 +/-    1.22       9.1 +/-    1.22  0.070 / 0.170