PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-19:57:40
G02     267.0          79.5                9.8 +/-    0.61      10.0 +/-    0.61  0.110 / 0.130
G05     168.9          22.6               12.9 +/-    4.09      26.7 +/-    4.09  0.070 / 0.140
G06     40.3           49.6                9.5 +/-    0.66      12.0 +/-    0.66  0.170 / 0.150
G12     321.2          62.4                8.9 +/-    0.83       9.9 +/-    0.83  0.080 / 0.190
G17     76.6           18.5                9.7 +/-    1.02      22.2 +/-    1.02  0.100 / 0.140
G19     62.3           36.5                7.9 +/-    1.15      12.3 +/-    1.15  0.100 / 0.150
G24     236.9          30.3               12.8 +/-    2.19      22.2 +/-    2.19  0.030 / 0.040
G25     317.6          18.6                8.6 +/-    1.76      19.5 +/-    1.76  0.030 / 0.030