PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-22:28:00
G02     59.6           32.5                8.5 +/-    1.17      14.1 +/-    1.17  0.310 / 0.520
G05     56.7           60.0                9.1 +/-    1.04      10.3 +/-    1.04  0.280 / 0.480
G12     185.4          33.8               14.7 +/-    1.37      23.9 +/-    1.37  0.060 / 0.080
G13     126.4          15.3               15.3 +/-    2.07      37.7 +/-    2.07  0.040 / 0.070
G15     162.8          13.3               15.5 +/-    1.67      40.1 +/-    1.67  0.050 / 0.130
G21     272.0          17.2               14.2 +/-    1.97      33.3 +/-    1.97  0.070 / 0.130
G25     236.7          51.8               10.7 +/-    1.49      13.2 +/-    1.49  0.040 / 0.110
G29     330.4          56.3               10.4 +/-    1.01      12.2 +/-    1.01  0.050 / 0.120