PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/12-08:43:10
G01     61.2           30.3                5.4 +/-    0.97       9.5 +/-    0.97  0.040 / 0.030
G06     179.5          13.0                2.9 +/-   23.76       7.5 +/-   23.76  0.030 / 0.030
G07     140.6          23.7                4.6 +/-    1.68       9.2 +/-    1.68  0.130 / 0.250
G11     50.1           28.2                4.1 +/-    2.21       7.5 +/-    2.21  0.150 / 0.280
G13     264.2          37.2                9.2 +/-    1.72      14.0 +/-    1.72  0.070 / 0.110
G15     295.6          16.4                5.7 +/-    2.33      13.7 +/-    2.33  0.070 / 0.130
G17     246.0          73.8                7.8 +/-    0.30       8.1 +/-    0.30  0.110 / 0.130
G19     229.1          50.6                8.8 +/-    2.63      11.1 +/-    2.63  0.120 / 0.130
G28     16.9           60.5                4.0 +/-    2.68       4.6 +/-    2.68  0.040 / 0.050
G30     142.5          57.7                7.4 +/-    0.43       8.6 +/-    0.43  0.040 / 0.050