PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/30-18:58:10
G01     122.2          15.7               12.4 +/-    2.59      30.5 +/-    2.59  0.060 / 0.050
G07     69.8           68.4                9.9 +/-    0.36      10.6 +/-    0.36  0.050 / 0.040
G08     47.9           37.6                8.4 +/-    1.19      12.8 +/-    1.19  0.170 / 0.290
G09     177.8          30.1               12.2 +/-    3.32      21.3 +/-    3.32  0.160 / 0.240
G11     113.1          38.3               12.3 +/-    0.72      18.4 +/-    0.72  0.100 / 0.190
G13     319.3          16.3                9.1 +/-    3.15      21.9 +/-    3.15  0.090 / 0.210
G17     202.2          17.4               14.1 +/-    2.03      33.0 +/-    2.03  0.030 / 0.030
G18     98.4           19.4               10.8 +/-    1.37      24.1 +/-    1.37  0.030 / 0.030
G28     286.9          56.1               10.2 +/-    2.58      12.0 +/-    2.58  0.030 / 0.030
G30     343.7          66.7                9.1 +/-    0.37       9.8 +/-    0.37  0.030 / 0.030