PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-22:12:10
G02     201.1          28.0               14.7 +/-    1.40      26.8 +/-    1.40  0.070 / 0.160
G06     166.2          61.7               12.1 +/-    0.45      13.6 +/-    0.45  0.060 / 0.130
G17     24.3           57.6               11.0 +/-    0.99      12.8 +/-    0.99  0.040 / 0.040
G19     339.2          69.2               10.6 +/-    0.42      11.2 +/-    0.42  0.040 / 0.040
G24     305.0          34.1                9.4 +/-    1.86      15.2 +/-    1.86  0.040 / 0.040
G28     95.3           35.6               10.8 +/-    1.56      16.9 +/-    1.56  0.030 / 0.030