PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-01:58:00
G10     249.2          25.5               15.3 +/-    1.45      29.5 +/-    1.45  0.120 / 0.330
G13     55.1           30.8               12.1 +/-    1.11      20.8 +/-    1.11  0.140 / 0.320
G15     92.3           58.4               13.5 +/-    0.58      15.6 +/-    0.58  0.040 / 0.050
G16     296.1          15.9                9.3 +/-    1.66      22.7 +/-    1.66  0.040 / 0.040
G20     265.0          46.2               13.9 +/-    3.27      18.4 +/-    3.27  0.090 / 0.130
G21     330.7          58.5                9.7 +/-    5.76      11.2 +/-    5.76  0.060 / 0.150
G26     267.9          16.3               13.7 +/-    1.11      32.9 +/-    1.11  0.030 / 0.040
G29     164.8          52.8               14.5 +/-    1.06      17.7 +/-    1.06  0.030 / 0.040