PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-16:58:00
G01     124.5          13.8               17.8 +/-    1.83      45.5 +/-    1.83  0.040 / 0.060
G07     61.6           69.2               16.9 +/-    0.50      17.9 +/-    0.50  0.040 / 0.070
G08     49.0           38.6               14.8 +/-    0.62      22.0 +/-    0.62  0.030 / 0.040
G09     177.7          32.5               20.3 +/-    1.29      33.8 +/-    1.29  0.040 / 0.040
G11     115.5          36.9               19.2 +/-    1.01      29.4 +/-    1.01  0.040 / 0.050
G13     320.2          14.2               13.9 +/-    2.46      35.3 +/-    2.46  0.040 / 0.040
G17     201.2          15.8               19.8 +/-    1.01      48.3 +/-    1.01  0.050 / 0.100
G18     101.0          18.1               16.0 +/-    1.20      36.9 +/-    1.20  0.050 / 0.120
G28     281.7          54.6               20.1 +/-    1.22      24.0 +/-    1.22  0.100 / 0.180
G30     337.8          63.6               15.8 +/-    0.79      17.4 +/-    0.79  0.110 / 0.150