PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-20:12:40
G02     227.5          69.1               12.6 +/-    1.02      13.4 +/-    1.02  0.060 / 0.110
G05     174.0          11.0                5.5 +/-   38.05      15.0 +/-   38.05  0.060 / 0.090
G06     43.5           63.4               11.4 +/-    0.37      12.6 +/-    0.37  0.160 / 0.300
G12     321.7          47.9               10.9 +/-    1.49      14.1 +/-    1.49  0.110 / 0.320
G17     65.1           27.1               10.3 +/-    0.70      19.2 +/-    0.70  0.030 / 0.070
G19     48.1           44.7               11.4 +/-    0.24      15.5 +/-    0.24  0.040 / 0.070
G24     251.4          38.1               14.3 +/-    1.32      21.4 +/-    1.32  0.050 / 0.110