PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/18-04:27:50
G01     311.4          30.7                7.6 +/-    1.82      13.1 +/-    1.82  0.120 / 0.110
G10     99.9           42.5                5.6 +/-    0.76       7.8 +/-    0.76  0.100 / 0.130
G11     288.5          27.0                5.1 +/-    1.16       9.5 +/-    1.16  0.090 / 0.260
G14     340.3          69.6                5.1 +/-    0.63       5.4 +/-    0.63  0.090 / 0.230
G18     285.5          49.2               13.3 +/-    1.05      16.9 +/-    1.05  0.050 / 0.050
G20     116.8          18.7                4.8 +/-    1.53      10.9 +/-    1.53  0.050 / 0.040
G22     307.9          21.1                5.8 +/-    2.21      12.4 +/-    2.21  0.040 / 0.040
G25     88.9           14.3                3.4 +/-    2.68       8.7 +/-    2.68  0.040 / 0.050
G31     168.2          59.4                6.8 +/-    0.43       7.7 +/-    0.43  0.050 / 0.070
G32     27.6           57.8                4.4 +/-    0.71       5.0 +/-    0.71  0.040 / 0.070