PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-04:58:00
G01     320.2          14.7              -16.0 +/-   31.49     -40.2 +/-   31.49  0.100 / 0.380
G08     260.9          15.0               10.3 +/-    1.24      25.7 +/-    1.24  0.200 / 0.460
G10     73.7           55.1                6.1 +/-    0.62       7.3 +/-    0.62  0.040 / 0.060
G11     306.2          21.3                5.6 +/-    2.84      11.9 +/-    2.84  0.040 / 0.050
G14     280.0          67.7                6.6 +/-    0.85       7.1 +/-    0.85  0.080 / 0.320
G18     308.0          37.3                5.4 +/-    1.12       8.2 +/-    1.12  0.080 / 0.320
G20     95.5           44.6               13.3 +/-    0.87      18.0 +/-    0.87  0.170 / 0.320
G27     226.7          11.2                8.3 +/-    1.51      22.7 +/-    1.51  0.150 / 0.380
G31     175.0          39.7                9.6 +/-    1.06      14.0 +/-    1.06  0.040 / 0.040
G32     4.4            69.1                6.9 +/-    0.57       7.3 +/-    0.57  0.040 / 0.040