PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-14:58:00
G02     236.7          70.7                7.1 +/-    0.68       7.5 +/-    0.68  0.060 / 0.270
G05     174.1          13.7                7.7 +/-    2.02      19.6 +/-    2.02  0.060 / 0.230
G06     40.9           58.0                7.5 +/-    0.60       8.7 +/-    0.60  0.040 / 0.040
G12     322.4          54.6                7.1 +/-    1.29       8.5 +/-    1.29  0.040 / 0.040
G17     71.0           21.5                6.5 +/-    0.73      13.7 +/-    0.73  0.100 / 0.110
G19     52.3           43.0                7.3 +/-    0.41      10.1 +/-    0.41  0.100 / 0.120
G24     243.0          35.0                9.3 +/-    1.99      14.7 +/-    1.99  0.040 / 0.060
G25     316.5          13.6                5.1 +/-    2.02      13.1 +/-    2.02  0.040 / 0.050