PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-20:28:00
G02     237.0          73.6                8.9 +/-    0.41       9.2 +/-    0.41  0.060 / 0.120
G05     172.0          15.1               11.0 +/-    2.41      27.4 +/-    2.41  0.080 / 0.110
G06     41.3           58.4                8.8 +/-    0.57      10.2 +/-    0.57  0.100 / 0.300
G12     322.2          52.8                9.1 +/-    1.50      11.1 +/-    1.50  0.100 / 0.260
G17     69.2           24.1                9.8 +/-    0.71      19.5 +/-    0.71  0.040 / 0.070
G19     53.5           41.6                8.9 +/-    0.32      12.6 +/-    0.32  0.040 / 0.060
G24     245.8          35.6               10.7 +/-    1.06      16.8 +/-    1.06  0.030 / 0.050
G25     316.3          10.9               -7.3 +/-   39.14     -19.9 +/-   39.14  0.030 / 0.040