PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-04:57:30
G02     44.9           44.6                4.8 +/-    1.48       6.4 +/-    1.48  0.040 / 0.040
G05     103.8          69.0                5.6 +/-    0.74       5.9 +/-    0.74  0.040 / 0.040
G06     59.4           10.9                3.3 +/-    1.47       9.1 +/-    1.47  0.030 / 0.040
G12     192.4          55.8                6.1 +/-    0.43       7.2 +/-    0.43  0.030 / 0.040
G25     269.4          59.4                5.7 +/-    1.34       6.5 +/-    1.34  0.040 / 0.030
G29     319.5          42.9                4.2 +/-    0.75       5.8 +/-    0.75  0.030 / 0.030