PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-21:42:30
G02     201.9          30.8               17.5 +/-    1.33      30.2 +/-    1.33  0.170 / 0.330
G06     163.1          65.2               16.1 +/-    0.58      17.5 +/-    0.58  0.120 / 0.240
G12     305.4          12.6               10.0 +/-    2.07      26.4 +/-    2.07  0.080 / 0.140
G17     28.4           55.0               12.1 +/-    0.60      14.5 +/-    0.60  0.070 / 0.130
G19     347.1          68.0               12.8 +/-    0.60      13.7 +/-    0.60  0.030 / 0.030
G24     302.1          36.0               12.1 +/-    0.91      18.9 +/-    0.91  0.030 / 0.040
G28     98.5           33.7               13.0 +/-    0.73      21.2 +/-    0.73  0.050 / 0.120