PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-16:42:30
G02     203.1          29.5               15.7 +/-    2.20      27.8 +/-    2.20  0.150 / 0.140
G06     158.9          67.2               11.6 +/-    0.38      12.4 +/-    0.38  0.170 / 0.110
G12     307.0          16.4                7.9 +/-    2.47      19.0 +/-    2.47  0.140 / 0.280
G17     33.6           51.1               10.8 +/-    1.18      13.4 +/-    1.18  0.170 / 0.220
G19     345.3          67.9                9.7 +/-    0.47      10.4 +/-    0.47  0.040 / 0.030
G24     299.9          37.6               10.6 +/-    1.49      16.0 +/-    1.49  0.040 / 0.030
G28     99.4           33.3               12.0 +/-    1.08      19.7 +/-    1.08  0.040 / 0.030