PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-23:42:30
G02     255.2          79.2               10.9 +/-    0.50      11.1 +/-    0.50  0.050 / 0.040
G05     169.5          20.0               14.4 +/-    1.44      31.7 +/-    1.44  0.040 / 0.040
G06     40.2           54.3               10.7 +/-    0.70      12.9 +/-    0.70  0.090 / 0.130
G12     321.5          55.9               10.2 +/-    0.93      12.1 +/-    0.93  0.180 / 0.190
G17     72.3           23.1                9.5 +/-    0.84      19.3 +/-    0.84  0.110 / 0.210
G19     59.6           37.7               10.1 +/-    1.15      15.3 +/-    1.15  0.110 / 0.140
G24     241.5          32.8               13.5 +/-    0.83      22.3 +/-    0.83  0.060 / 0.040
G25     317.2          14.5                7.6 +/-    1.95      19.2 +/-    1.95  0.060 / 0.050