PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/17-14:12:50
G01     319.2          18.1                4.7 +/-    1.97      10.9 +/-    1.97  0.030 / 0.020
G08     256.1          13.5                3.9 +/-    2.53      10.2 +/-    2.53  0.030 / 0.020
G10     79.8           52.5                6.1 +/-    0.83       7.5 +/-    0.83  0.040 / 0.030
G11     302.3          23.7                4.6 +/-    1.76       9.2 +/-    1.76  0.040 / 0.040
G14     298.3          71.3                5.6 +/-    0.45       5.9 +/-    0.45  0.140 / 0.160
G18     302.5          43.4                5.9 +/-    2.24       8.1 +/-    2.24  0.110 / 0.140
G20     105.3          29.0                7.8 +/-    1.18      14.0 +/-    1.18  0.040 / 0.030
G22     301.2          11.9                1.7 +/-    4.73       4.6 +/-    4.73  0.040 / 0.030
G31     178.9          38.7                8.0 +/-    0.60      11.9 +/-    0.60  0.080 / 0.090
G32     358.5          69.5                5.5 +/-    0.73       5.9 +/-    0.73  0.080 / 0.090