PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-20:12:30
G02     285.5          80.7               10.2 +/-    0.61      10.3 +/-    0.61  0.110 / 0.190
G05     167.6          25.5               14.3 +/-    1.41      27.7 +/-    1.41  0.050 / 0.150
G06     40.4           46.7                8.3 +/-    0.25      10.9 +/-    0.25  0.040 / 0.050
G12     319.7          65.5                7.6 +/-    1.08       8.3 +/-    1.08  0.030 / 0.050
G17     79.1           16.8                9.2 +/-    1.69      21.9 +/-    1.69  0.040 / 0.030
G19     65.4           34.6                8.7 +/-    0.67      13.9 +/-    0.67  0.040 / 0.040
G24     234.2          28.2               12.4 +/-    1.96      22.6 +/-    1.96  0.080 / 0.150
G25     317.7          21.3                7.2 +/-    1.70      15.4 +/-    1.70  0.080 / 0.140