PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-00:42:30
G02     222.2          67.8               12.6 +/-    0.86      13.5 +/-    0.86  0.040 / 0.070
G06     47.0           68.6               10.8 +/-    0.45      11.5 +/-    0.45  0.060 / 0.070
G12     320.2          41.6               11.0 +/-    0.98      15.6 +/-    0.98  0.040 / 0.060
G17     60.0           32.3                8.1 +/-    1.10      13.5 +/-    1.10  0.040 / 0.050
G19     45.6           45.9                9.0 +/-    0.84      12.0 +/-    0.84  0.050 / 0.070
G24     257.4          39.7               12.2 +/-    1.21      17.9 +/-    1.21  0.070 / 0.090