PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-04:42:10
G02     45.4           44.2                4.3 +/-    1.40       5.9 +/-    1.40  0.030 / 0.040
G05     101.7          69.0                4.6 +/-    0.80       4.9 +/-    0.80  0.030 / 0.040
G06     59.9           10.2                3.3 +/-    1.74       9.1 +/-    1.74  0.040 / 0.040
G12     192.1          55.1                5.1 +/-    0.33       6.1 +/-    0.33  0.030 / 0.030
G25     268.3          59.4                6.7 +/-    0.91       7.6 +/-    0.91  0.030 / 0.040
G29     320.1          43.6                3.9 +/-    1.20       5.4 +/-    1.20  0.030 / 0.030