PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/27-21:58:00
G07     60.9           67.5               12.5 +/-    0.84      13.4 +/-    0.84  0.030 / 0.030
G08     50.2           38.6               10.9 +/-    0.70      16.2 +/-    0.70  0.030 / 0.040
G09     178.4          37.8               13.5 +/-    0.75      20.3 +/-    0.75  0.050 / 0.080
G11     117.5          35.3               14.2 +/-    0.80      22.5 +/-    0.80  0.060 / 0.060
G17     198.7          15.5               16.0 +/-    3.92      39.4 +/-    3.92  0.060 / 0.330
G18     101.2          16.1               11.8 +/-    2.25      28.6 +/-    2.25  0.060 / 0.270
G27     37.7           10.1                8.6 +/-    3.22      24.1 +/-    3.22  0.110 / 0.110
G28     270.7          49.6               12.7 +/-    2.58      16.1 +/-    2.58  0.090 / 0.100
G30     331.5          59.7               10.2 +/-    0.50      11.6 +/-    0.50  0.060 / 0.050