PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/14-01:28:10
G02     232.1          73.7                9.4 +/-    0.48       9.7 +/-    0.48  0.040 / 0.020
G05     172.3          13.5               13.1 +/-    2.08      33.7 +/-    2.08  0.040 / 0.020
G06     42.2           62.9                6.4 +/-    0.37       7.1 +/-    0.37  0.200 / 0.170
G12     321.2          47.3                7.7 +/-    0.71      10.0 +/-    0.71  0.220 / 0.160
G17     65.2           28.6                6.7 +/-    1.20      12.1 +/-    1.20  0.040 / 0.010
G19     52.3           41.9                8.3 +/-    1.07      11.7 +/-    1.07  0.030 / 0.020
G24     250.2          37.1                9.9 +/-    0.84      15.1 +/-    0.84  0.120 / 0.060