PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/05-19:42:50
G01     60.5           30.4               10.5 +/-    1.19      18.1 +/-    1.19  0.040 / 0.050
G07     141.1          17.0               14.8 +/-    1.70      35.1 +/-    1.70  0.040 / 0.050
G11     47.9           23.8                9.3 +/-    1.52      18.7 +/-    1.52  0.080 / 0.150
G13     262.5          36.2               11.3 +/-    1.63      17.5 +/-    1.63  0.110 / 0.150
G15     293.8          16.6                6.9 +/-    2.20      16.4 +/-    2.20  0.040 / 0.050
G17     255.1          76.3               12.7 +/-    0.42      13.0 +/-    0.42  0.040 / 0.040
G18     41.5           12.1                9.2 +/-    1.64      24.7 +/-    1.64  0.070 / 0.120
G19     231.1          50.4               12.1 +/-    2.03      15.2 +/-    2.03  0.080 / 0.120
G28     26.1           59.1               10.0 +/-    0.66      11.4 +/-    0.66  0.210 / 0.260
G30     142.8          50.9               13.2 +/-    0.86      16.4 +/-    0.86  0.230 / 0.450