PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-04:42:40
G02     43.9           45.5                3.0 +/-    1.21       4.1 +/-    1.21  0.030 / 0.040
G05     107.5          68.8                4.5 +/-    0.75       4.8 +/-    0.75  0.040 / 0.040
G06     58.7           11.5                2.1 +/-    1.47       5.7 +/-    1.47  0.030 / 0.040
G12     193.1          57.1                5.5 +/-    0.45       6.4 +/-    0.45  0.030 / 0.030
G25     272.3          59.3                3.5 +/-    1.40       4.0 +/-    1.40  0.040 / 0.030
G29     318.7          42.0                3.3 +/-    0.80       4.6 +/-    0.80  0.040 / 0.040