PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-09:12:30
G07     343.6          61.7                3.9 +/-    0.63       4.3 +/-    0.63  0.080 / 0.110
G08     100.7          53.5                5.1 +/-    1.27       6.2 +/-    1.27  0.070 / 0.120
G09     186.9          70.2                4.7 +/-    1.12       5.0 +/-    1.12  0.070 / 0.200
G11     144.0          16.1                3.9 +/-    2.60       9.5 +/-    2.60  0.070 / 0.210
G23     155.6          35.3                4.6 +/-    1.12       7.3 +/-    1.12  0.080 / 0.220
G27     52.5           30.1                3.4 +/-    0.76       5.9 +/-    0.76  0.100 / 0.200
G28     237.9          26.0                4.5 +/-    3.04       8.5 +/-    3.04  0.040 / 0.040
G30     304.5          37.4                3.4 +/-    1.04       5.2 +/-    1.04  0.040 / 0.040