PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-04:43:00
G01     320.0          15.2               -6.9 +/-   31.22     -17.0 +/-   31.22  0.250 / 0.290
G08     260.1          14.8                8.0 +/-    1.66      20.0 +/-    1.66  0.180 / 0.300
G10     74.7           54.8                6.3 +/-    0.33       7.5 +/-    0.33  0.160 / 0.260
G11     305.7          21.7                7.7 +/-    1.29      16.3 +/-    1.29  0.170 / 0.260
G14     282.0          68.1                7.8 +/-    0.44       8.3 +/-    0.44  0.040 / 0.040
G18     307.5          37.8                6.2 +/-    1.67       9.4 +/-    1.67  0.030 / 0.040
G20     94.8           46.4               13.2 +/-    1.04      17.5 +/-    1.04  0.100 / 0.240
G27     226.3          10.8                9.1 +/-    1.40      24.8 +/-    1.40  0.130 / 0.230
G31     174.8          40.4                7.8 +/-    1.06      11.3 +/-    1.06  0.160 / 0.300
G32     5.7            68.6                6.1 +/-    0.47       6.5 +/-    0.47  0.140 / 0.310