PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-13:12:40
G05     52.0           10.6                1.8 +/-    3.18       5.0 +/-    3.18  0.330 / 0.380
G10     242.6          21.7                5.0 +/-    1.78      10.5 +/-    1.78  0.400 / 0.340
G13     62.8           32.9                3.7 +/-    0.99       6.0 +/-    0.99  0.140 / 0.440
G15     99.9           56.2                7.0 +/-    0.94       8.2 +/-    0.94  0.130 / 0.430
G16     304.6          15.4                2.9 +/-    1.63       7.2 +/-    1.63  0.140 / 0.230
G20     260.2          47.4                6.6 +/-    3.26       8.6 +/-    3.26  0.110 / 0.160
G21     324.6          54.0                3.5 +/-    0.38       4.2 +/-    0.38  0.040 / 0.020
G26     278.4          18.4                3.5 +/-    1.83       8.0 +/-    1.83  0.030 / 0.030
G29     159.9          62.6                6.8 +/-    0.89       7.5 +/-    0.89  0.040 / 0.050