PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-22:13:10
G02     202.1          32.1               19.1 +/-    1.23      32.1 +/-    1.23  0.130 / 0.220
G06     162.3          66.2               14.6 +/-    0.53      15.8 +/-    0.53  0.140 / 0.350
G12     306.0          13.2               10.6 +/-    2.31      27.6 +/-    2.31  0.090 / 0.100
G17     29.1           54.5               12.5 +/-    1.22      14.9 +/-    1.22  0.060 / 0.090
G19     350.4          67.4               11.9 +/-    0.41      12.8 +/-    0.41  0.040 / 0.030
G24     301.2          36.5               12.2 +/-    2.19      18.9 +/-    2.19  0.030 / 0.030
G28     99.6           33.0               14.4 +/-    1.43      23.7 +/-    1.43  0.060 / 0.120