PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-16:27:50
G07     20.7           68.8               15.6 +/-    0.72      16.6 +/-    0.72  0.050 / 0.050
G08     62.0           48.3               15.8 +/-    0.83      20.4 +/-    0.83  0.040 / 0.060
G09     179.3          47.0               19.5 +/-    1.45      25.5 +/-    1.45  0.030 / 0.030
G11     129.0          28.8               19.3 +/-    1.31      34.6 +/-    1.31  0.030 / 0.030
G18     113.1          11.3               14.9 +/-    3.07      40.4 +/-    3.07  0.030 / 0.040
G23     159.0          14.0               15.4 +/-    2.28      39.3 +/-    2.28  0.040 / 0.040
G27     39.6           15.2               12.8 +/-    2.31      31.6 +/-    2.31  0.180 / 0.280
G28     261.9          47.1               20.4 +/-    4.65      26.7 +/-    4.65  0.130 / 0.290
G30     322.9          52.7               15.7 +/-    0.44      19.2 +/-    0.44  0.180 / 0.310