PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/11-05:12:20
G02     44.4           45.1                2.5 +/-    1.50       3.4 +/-    1.50  0.040 / 0.040
G05     105.9          68.9                3.2 +/-    0.68       3.4 +/-    0.68  0.030 / 0.040
G06     59.0           11.5                2.0 +/-    1.25       5.4 +/-    1.25  0.040 / 0.040
G12     192.7          56.4                4.0 +/-    0.46       4.7 +/-    0.46  0.040 / 0.040
G25     270.5          59.5                2.2 +/-    0.32       2.5 +/-    0.32  0.030 / 0.030
G29     318.9          42.2                2.9 +/-    0.82       4.1 +/-    0.82  0.040 / 0.020