PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-00:42:40
G02     201.9          33.7               16.0 +/-    1.64      26.0 +/-    1.64  0.130 / 0.160
G06     163.7          66.3               13.1 +/-    0.45      14.2 +/-    0.45  0.120 / 0.250
G12     306.1          12.9               10.1 +/-    2.46      26.5 +/-    2.46  0.070 / 0.130
G17     29.5           54.2               10.8 +/-    1.11      13.0 +/-    1.11  0.080 / 0.120
G19     354.5          66.8               10.8 +/-    0.45      11.6 +/-    0.45  0.030 / 0.030
G24     300.8          36.6               11.3 +/-    1.90      17.4 +/-    1.90  0.040 / 0.040
G28     100.4          32.4               10.7 +/-    0.66      17.9 +/-    0.66  0.070 / 0.090