PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/26-18:12:30
G02     30.1           57.7                7.3 +/-    0.59       8.5 +/-    0.59  0.020 / 0.030
G05     140.5          62.1                8.3 +/-    0.93       9.2 +/-    0.93  0.030 / 0.040
G06     54.5           13.6                7.7 +/-    3.26      19.7 +/-    3.26  0.030 / 0.030
G12     188.7          64.0                5.9 +/-    0.27       6.5 +/-    0.27  0.030 / 0.030
G19     98.9           12.7                8.5 +/-    2.98      22.4 +/-    2.98  0.040 / 0.050
G25     295.6          54.5                4.6 +/-    3.95       5.5 +/-    3.95  0.050 / 0.050
G29     306.7          26.8                5.7 +/-    1.79      10.8 +/-    1.79  0.120 / 0.250