PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-22:57:20
G02     200.6          26.4               18.2 +/-    1.77      34.5 +/-    1.77  0.050 / 0.030
G06     168.0          59.4               16.9 +/-    0.82      19.3 +/-    0.82  0.050 / 0.040
G17     21.1           59.5               13.2 +/-    0.80      15.1 +/-    0.80  0.100 / 0.110
G19     334.6          69.8               12.9 +/-    0.58      13.7 +/-    0.58  0.090 / 0.100
G24     306.7          32.7               11.0 +/-    1.84      18.1 +/-    1.84  0.040 / 0.090
G28     93.4           36.7               14.0 +/-    1.51      21.5 +/-    1.51  0.040 / 0.080