PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/14-04:57:20
G02     43.4           46.0                3.6 +/-    1.17       4.8 +/-    1.17  0.030 / 0.030
G05     109.6          68.7                5.3 +/-    0.47       5.7 +/-    0.47  0.030 / 0.040
G06     58.3           12.2                2.0 +/-    1.48       5.3 +/-    1.48  0.040 / 0.040
G12     193.4          57.8                5.8 +/-    0.62       6.7 +/-    0.62  0.050 / 0.040
G25     273.4          59.3                2.0 +/-    1.12       2.3 +/-    1.12  0.110 / 0.100
G29     318.1          41.4                3.2 +/-    0.87       4.6 +/-    0.87  0.180 / 0.120