PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/21-12:42:40
G01     81.2           33.1                3.9 +/-    0.36       6.5 +/-    0.36  0.020 / 0.030
G07     131.7          38.7                6.0 +/-    0.86       9.0 +/-    0.86  0.030 / 0.020
G11     59.6           35.1                3.6 +/-    0.46       5.7 +/-    0.46  0.040 / 0.070
G13     285.1          37.8                5.3 +/-    1.15       8.1 +/-    1.15  0.040 / 0.070
G15     312.7          10.7               -8.7 +/-   13.83     -24.0 +/-   13.83  0.050 / 0.080
G17     221.0          62.8                7.1 +/-    0.85       7.8 +/-    0.85  0.040 / 0.090
G18     55.8           21.4                2.4 +/-    1.00       5.1 +/-    1.00  0.060 / 0.110
G19     218.5          30.5                4.6 +/-    1.36       8.0 +/-    1.36  0.060 / 0.140
G28     3.2            61.0                4.0 +/-    0.62       4.5 +/-    0.62  0.090 / 0.210
G30     122.3          71.9                6.2 +/-    0.58       6.5 +/-    0.58  0.090 / 0.230