PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-08:12:30
G07     342.7          61.3                4.0 +/-    0.52       4.5 +/-    0.52  0.060 / 0.090
G08     86.4           51.8                4.3 +/-    0.34       5.3 +/-    0.34  0.050 / 0.070
G09     176.7          63.1                6.1 +/-    1.76       6.7 +/-    1.76  0.030 / 0.050
G11     141.1          17.2                4.6 +/-    1.24      10.9 +/-    1.24  0.030 / 0.040
G23     157.6          36.9                5.0 +/-    0.80       7.7 +/-    0.80  0.060 / 0.090
G27     51.0           29.5                2.6 +/-    1.07       4.6 +/-    1.07  0.060 / 0.110
G28     241.5          33.0                5.9 +/-    2.29       9.7 +/-    2.29  0.050 / 0.090
G30     305.4          37.4                2.8 +/-    1.05       4.3 +/-    1.05  0.060 / 0.090