PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-18:12:30
G02     31.9           56.3               11.5 +/-    0.48      13.5 +/-    0.48  0.030 / 0.030
G05     137.2          63.6               13.4 +/-    1.26      14.7 +/-    1.26  0.040 / 0.030
G06     55.5           12.3                8.3 +/-    1.29      22.0 +/-    1.29  0.040 / 0.050
G12     187.6          61.9               11.9 +/-    1.59      13.3 +/-    1.59  0.030 / 0.050
G19     100.3          11.6               10.5 +/-    2.42      28.3 +/-    2.42  0.110 / 0.120
G25     292.7          55.6               10.5 +/-    0.57      12.4 +/-    0.57  0.100 / 0.140
G29     308.0          28.1                8.6 +/-    1.52      15.7 +/-    1.52  0.040 / 0.060