PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-21:12:30
G02     30.2           57.8               10.9 +/-    0.82      12.6 +/-    0.82  0.030 / 0.030
G05     141.3          60.9               13.1 +/-    0.44      14.8 +/-    0.44  0.030 / 0.040
G06     53.4           15.6                7.9 +/-    1.90      19.3 +/-    1.90  0.110 / 0.170
G12     194.2          67.6               11.1 +/-    0.34      11.9 +/-    0.34  0.140 / 0.160
G19     97.8           13.0               11.3 +/-    1.87      29.5 +/-    1.87  0.050 / 0.050
G25     299.0          52.6               10.9 +/-    1.94      13.3 +/-    1.94  0.080 / 0.050
G29     305.6          25.6               11.1 +/-    1.05      21.4 +/-    1.05  0.020 / 0.030