PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/24-19:12:30
G02     309.9          80.6                9.8 +/-    0.98       9.9 +/-    0.98  0.100 / 0.100
G05     166.2          29.4               12.8 +/-    1.25      22.8 +/-    1.25  0.060 / 0.110
G06     41.1           42.3                8.8 +/-    0.78      12.3 +/-    0.78  0.280 / 0.250
G12     316.1          70.9                9.9 +/-    0.37      10.4 +/-    0.37  0.190 / 0.220
G17     82.9           13.6                9.9 +/-    2.72      25.6 +/-    2.72  0.030 / 0.030
G19     69.3           32.3                9.4 +/-    2.01      15.7 +/-    2.01  0.030 / 0.040
G24     230.3          25.2               12.0 +/-    2.43      23.3 +/-    2.43  0.150 / 0.210
G25     317.6          25.5                9.7 +/-    1.62      18.7 +/-    1.62  0.140 / 0.190