PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-01:57:40
G02     232.5          74.0                8.4 +/-    0.35       8.7 +/-    0.35  0.040 / 0.040
G05     172.2          13.6                9.8 +/-    3.02      25.2 +/-    3.02  0.030 / 0.050
G06     42.1           63.0                6.4 +/-    0.32       7.1 +/-    0.32  0.040 / 0.060
G12     321.2          47.3                8.0 +/-    0.45      10.5 +/-    0.45  0.050 / 0.060
G17     65.6           28.2                6.3 +/-    1.74      11.4 +/-    1.74  0.030 / 0.030
G19     52.6           41.7                6.8 +/-    0.86       9.7 +/-    0.86  0.030 / 0.030
G24     250.1          37.0                9.7 +/-    0.78      14.9 +/-    0.78  0.160 / 0.200