PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-21:12:50
G02     202.3          31.9               18.6 +/-    1.36      31.3 +/-    1.36  0.090 / 0.270
G06     161.4          66.6               14.6 +/-    0.48      15.8 +/-    0.48  0.110 / 0.180
G12     306.2          13.8               11.4 +/-    2.92      29.1 +/-    2.92  0.100 / 0.120
G17     30.2           53.7               12.5 +/-    1.05      15.1 +/-    1.05  0.090 / 0.090
G19     349.8          67.4               12.4 +/-    0.46      13.3 +/-    0.46  0.040 / 0.030
G24     300.8          36.8               12.6 +/-    2.77      19.4 +/-    2.77  0.050 / 0.020
G28     99.7           33.0               12.5 +/-    0.88      20.7 +/-    0.88  0.040 / 0.030