PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-16:58:00
G01     126.2          11.5               11.3 +/-    3.95      30.6 +/-    3.95  0.150 / 0.110
G07     68.7           65.9               11.1 +/-    0.41      12.0 +/-    0.41  0.080 / 0.100
G08     50.3           39.3                9.5 +/-    1.32      14.0 +/-    1.32  0.030 / 0.040
G09     178.9          37.3               11.5 +/-    1.21      17.6 +/-    1.21  0.040 / 0.030
G11     116.8          36.2               11.0 +/-    1.13      17.0 +/-    1.13  0.060 / 0.100
G13     320.7          12.7                3.6 +/-   17.15       9.5 +/-   17.15  0.070 / 0.100
G17     199.5          14.9               10.8 +/-    3.40      26.9 +/-    3.40  0.070 / 0.080
G18     101.6          16.7                9.9 +/-    1.44      23.6 +/-    1.44  0.070 / 0.080
G28     271.3          49.2                9.7 +/-    3.06      12.4 +/-    3.06  0.150 / 0.450
G30     336.7          62.9               10.6 +/-    0.77      11.8 +/-    0.77  0.080 / 0.370