PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-21:12:30
G02     339.7          78.8                8.5 +/-    0.37       8.6 +/-    0.37  0.120 / 0.220
G05     163.8          34.0               12.4 +/-    0.91      20.0 +/-    0.91  0.090 / 0.190
G06     42.0           38.7                7.5 +/-    0.63      11.2 +/-    0.63  0.050 / 0.080
G12     309.7          73.9                7.5 +/-    0.76       7.8 +/-    0.76  0.040 / 0.090
G17     85.9           12.2               11.1 +/-    2.19      29.5 +/-    2.19  0.030 / 0.070
G19     73.8           29.2                9.4 +/-    0.59      16.8 +/-    0.59  0.030 / 0.040
G24     227.4          22.3               13.2 +/-    1.90      27.5 +/-    1.90  0.030 / 0.040
G25     317.2          28.9                7.8 +/-    1.66      14.0 +/-    1.66  0.030 / 0.040