PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-21:12:30
G02     203.4          36.3               16.0 +/-    1.63      24.8 +/-    1.63  0.050 / 0.120
G06     162.0          69.0               14.5 +/-    0.95      15.4 +/-    0.95  0.070 / 0.120
G12     307.0          14.0                8.6 +/-    2.70      21.9 +/-    2.70  0.050 / 0.040
G17     37.0           48.2               11.9 +/-    0.45      15.4 +/-    0.45  0.040 / 0.050
G19     4.9            64.3               11.1 +/-    0.45      12.1 +/-    0.45  0.040 / 0.040
G24     295.6          39.1               10.8 +/-    1.80      15.9 +/-    1.80  0.040 / 0.040
G28     101.1          34.5               12.7 +/-    0.72      20.4 +/-    0.72  0.110 / 0.240