PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-17:43:00
G01     124.5          13.8               15.7 +/-    1.80      40.1 +/-    1.80  0.040 / 0.060
G07     61.4           69.2               13.9 +/-    0.36      14.7 +/-    0.36  0.050 / 0.050
G08     49.3           39.1               11.2 +/-    1.26      16.5 +/-    1.26  0.040 / 0.040
G09     177.9          32.7               14.1 +/-    2.03      23.4 +/-    2.03  0.030 / 0.040
G11     115.9          36.9               14.2 +/-    0.64      21.7 +/-    0.64  0.030 / 0.030
G13     320.3          14.1               10.3 +/-    2.75      26.2 +/-    2.75  0.030 / 0.030
G17     201.4          15.4               16.9 +/-    2.55      41.7 +/-    2.55  0.090 / 0.160
G18     101.1          18.1               14.1 +/-    1.45      32.4 +/-    1.45  0.110 / 0.250
G28     281.8          54.7               14.0 +/-    2.50      16.7 +/-    2.50  0.060 / 0.090
G30     338.4          63.9               13.5 +/-    0.73      14.8 +/-    0.73  0.100 / 0.100