PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-17:12:50
G01     125.3          12.3               11.7 +/-    1.67      31.1 +/-    1.67  0.070 / 0.080
G07     71.9           65.3               10.9 +/-    0.46      11.9 +/-    0.46  0.050 / 0.080
G08     49.4           38.3                9.0 +/-    0.51      13.5 +/-    0.51  0.060 / 0.100
G09     178.8          36.0               10.8 +/-    1.72      16.8 +/-    1.72  0.060 / 0.120
G11     115.4          36.9               12.1 +/-    0.77      18.6 +/-    0.77  0.120 / 0.330
G13     320.4          13.7                8.7 +/-    1.98      22.4 +/-    1.98  0.100 / 0.390
G17     199.6          16.2               11.4 +/-    1.14      27.6 +/-    1.14  0.130 / 0.370
G18     100.4          17.3               11.0 +/-    1.86      25.8 +/-    1.86  0.130 / 0.440
G28     273.0          50.0                9.4 +/-    1.01      11.8 +/-    1.01  0.100 / 0.320
G30     338.1          63.8                9.2 +/-    0.85      10.2 +/-    0.85  0.090 / 0.330