PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-16:58:00
G02     33.7           54.7                7.5 +/-    0.91       9.0 +/-    0.91  0.040 / 0.040
G05     135.7          65.5                8.7 +/-    0.48       9.4 +/-    0.48  0.030 / 0.030
G06     57.0           11.0                7.2 +/-    1.33      19.5 +/-    1.33  0.020 / 0.030
G12     188.8          59.7                9.5 +/-    0.42      10.8 +/-    0.42  0.030 / 0.030
G19     102.6          10.3                8.8 +/-    2.36      24.3 +/-    2.36  0.040 / 0.040
G25     285.3          57.9               10.9 +/-    1.66      12.6 +/-    1.66  0.040 / 0.050
G29     310.5          31.1                8.5 +/-    1.89      14.5 +/-    1.89  0.160 / 0.160