PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-23:28:10
G02     216.1          61.6               12.7 +/-    0.89      14.2 +/-    0.89  0.070 / 0.080
G06     56.2           73.6                9.9 +/-    0.39      10.3 +/-    0.39  0.060 / 0.070
G12     318.8          36.7               11.8 +/-    1.60      18.1 +/-    1.60  0.070 / 0.080
G17     55.6           35.2               11.4 +/-    1.12      18.0 +/-    1.12  0.070 / 0.080
G19     38.6           49.8               10.3 +/-    1.80      13.0 +/-    1.80  0.140 / 0.260
G24     264.7          41.5               13.4 +/-    1.53      19.0 +/-    1.53  0.180 / 0.320
G28     123.1          13.0               15.3 +/-    1.80      39.8 +/-    1.80  0.040 / 0.030