PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/03-12:28:00
G01     123.0          14.9                6.8 +/-    2.21      16.9 +/-    2.21  0.040 / 0.040
G07     68.0           68.4                5.2 +/-    1.06       5.6 +/-    1.06  0.060 / 0.040
G08     46.6           34.2                5.1 +/-    0.91       8.3 +/-    0.91  0.130 / 0.250
G09     176.0          28.8                8.2 +/-    1.23      14.7 +/-    1.23  0.110 / 0.200
G11     111.4          38.0                5.6 +/-    0.46       8.4 +/-    0.46  0.040 / 0.060
G13     319.5          16.0                1.5 +/-    2.02       3.7 +/-    2.02  0.040 / 0.070
G17     200.4          20.5                5.5 +/-    2.38      11.9 +/-    2.38  0.040 / 0.090
G18     98.5           18.9                5.5 +/-    1.19      12.4 +/-    1.19  0.040 / 0.100
G28     284.2          55.3                5.3 +/-    1.71       6.3 +/-    1.71  0.030 / 0.040
G30     337.3          63.8                3.1 +/-    0.40       3.4 +/-    0.40  0.020 / 0.040