PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/13-14:28:10
G01     319.3          17.9                5.2 +/-    1.86      12.0 +/-    1.86  0.040 / 0.030
G08     256.2          13.6                4.1 +/-    2.97      10.5 +/-    2.97  0.040 / 0.030
G10     79.6           52.6                6.4 +/-    0.92       7.9 +/-    0.92  0.080 / 0.140
G11     302.4          23.6                5.0 +/-    1.18      10.1 +/-    1.18  0.080 / 0.130
G14     297.7          71.3                5.9 +/-    0.38       6.2 +/-    0.38  0.130 / 0.240
G18     302.5          43.4                6.1 +/-    2.01       8.4 +/-    2.01  0.260 / 0.150
G20     105.1          29.2                8.7 +/-    1.51      15.6 +/-    1.51  0.020 / 0.020
G22     301.1          11.6                1.0 +/-    4.49       2.8 +/-    4.49  0.030 / 0.020
G31     179.1          38.3                8.3 +/-    0.75      12.4 +/-    0.75  0.040 / 0.040
G32     358.6          69.5                6.2 +/-    0.65       6.6 +/-    0.65  0.040 / 0.030