PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/23-19:27:40
G01     122.0          15.8               15.0 +/-    1.31      36.5 +/-    1.31  0.040 / 0.070
G07     70.3           68.3               12.9 +/-    1.02      13.7 +/-    1.02  0.050 / 0.070
G08     48.0           37.8                9.8 +/-    0.58      14.7 +/-    0.58  0.100 / 0.250
G09     177.9          30.0               13.8 +/-    2.09      24.1 +/-    2.09  0.110 / 0.290
G11     113.1          38.3               14.5 +/-    0.61      21.6 +/-    0.61  0.030 / 0.040
G13     319.3          16.4               10.6 +/-    1.57      25.4 +/-    1.57  0.040 / 0.040
G17     202.3          17.2               18.7 +/-    0.77      44.2 +/-    0.77  0.050 / 0.110
G18     98.3           19.5               13.2 +/-    1.12      29.4 +/-    1.12  0.060 / 0.110
G28     287.2          56.2               14.1 +/-    0.55      16.7 +/-    0.55  0.040 / 0.080
G30     344.5          67.0               11.3 +/-    1.07      12.2 +/-    1.07  0.040 / 0.060