PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-13:57:50
G01     123.0          14.9               10.2 +/-    2.08      25.5 +/-    2.08  0.030 / 0.050
G07     67.7           68.5                9.0 +/-    0.88       9.6 +/-    0.88  0.030 / 0.040
G08     47.0           35.2                7.8 +/-    0.58      12.3 +/-    0.58  0.130 / 0.270
G09     176.5          29.4               10.8 +/-    2.84      19.2 +/-    2.84  0.120 / 0.190
G11     112.1          37.9               10.4 +/-    0.79      15.6 +/-    0.79  0.030 / 0.060
G13     319.5          15.9                6.6 +/-    1.56      16.1 +/-    1.56  0.040 / 0.060
G17     200.8          19.6               10.0 +/-    2.07      22.2 +/-    2.07  0.030 / 0.040
G18     98.7           18.9                9.2 +/-    1.38      20.7 +/-    1.38  0.030 / 0.040
G28     284.4          55.3                9.0 +/-    1.24      10.7 +/-    1.24  0.050 / 0.100
G30     338.3          64.2                8.2 +/-    0.60       9.0 +/-    0.60  0.050 / 0.110