PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-09:12:40
G02     336.0          79.4                2.5 +/-    0.48       2.5 +/-    0.48  0.120 / 0.200
G05     166.3          31.1                5.0 +/-    1.04       8.5 +/-    1.04  0.110 / 0.230
G06     40.5           43.4                1.6 +/-    0.83       2.1 +/-    0.83  0.050 / 0.090
G12     313.9          68.9                1.5 +/-    0.75       1.6 +/-    0.75  0.070 / 0.090
G19     72.3           29.8                3.2 +/-    0.62       5.7 +/-    0.62  0.040 / 0.060
G24     225.1          22.5                5.3 +/-    3.67      10.9 +/-    3.67  0.050 / 0.050
G25     316.5          33.5                2.2 +/-    1.79       3.6 +/-    1.79  0.030 / 0.040