PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-22:57:40
G02     247.2          77.5               11.6 +/-    0.60      11.8 +/-    0.60  0.050 / 0.050
G05     170.3          18.2               16.5 +/-    1.78      37.9 +/-    1.78  0.050 / 0.050
G06     40.5           55.9               11.0 +/-    0.60      13.0 +/-    0.60  0.050 / 0.200
G12     321.7          54.4               11.2 +/-    0.81      13.5 +/-    0.81  0.080 / 0.190
G17     71.0           23.7               10.3 +/-    0.45      20.7 +/-    0.45  0.080 / 0.140
G19     57.5           39.0               10.5 +/-    0.64      15.5 +/-    0.64  0.080 / 0.120
G24     243.2          33.9               13.6 +/-    1.05      22.0 +/-    1.05  0.030 / 0.030
G25     316.9          13.0                9.1 +/-    2.07      23.8 +/-    2.07  0.030 / 0.030