PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-12:58:00
G01     315.6          25.2                1.9 +/-    4.06       3.7 +/-    4.06  0.030 / 0.050
G10     92.1           47.2                3.8 +/-    0.84       5.0 +/-    0.84  0.040 / 0.050
G11     293.9          26.7                3.2 +/-    1.13       6.0 +/-    1.13  0.050 / 0.060
G14     326.8          71.2                4.4 +/-    0.97       4.7 +/-    0.97  0.050 / 0.060
G18     292.5          48.1                5.3 +/-    1.58       6.8 +/-    1.58  0.110 / 0.180
G20     112.3          22.8                3.9 +/-    2.96       7.9 +/-    2.96  0.190 / 0.270
G22     305.8          19.3                3.3 +/-    2.10       7.4 +/-    2.10  0.160 / 0.430
G25     92.0           11.7                0.4 +/-   22.86       1.1 +/-   22.86  0.150 / 0.440
G31     176.0          49.2                4.2 +/-    1.26       5.3 +/-    1.26  0.090 / 0.160
G32     13.6           64.3                0.7 +/-    1.47       0.7 +/-    1.47  0.080 / 0.130