PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-21:12:50
G01     101.7          28.2               18.0 +/-    0.90      32.7 +/-    0.90  0.280 / 0.160
G07     114.1          54.7               18.6 +/-    0.67      22.2 +/-    0.67  0.180 / 0.170
G08     42.1           20.0               11.9 +/-    1.41      26.1 +/-    1.41  0.080 / 0.120
G11     84.2           43.3               18.5 +/-    1.23      25.5 +/-    1.23  0.070 / 0.110
G13     305.5          31.3               16.3 +/-    1.57      27.7 +/-    1.57  0.020 / 0.040
G17     209.3          38.9               20.6 +/-    1.37      30.5 +/-    1.37  0.030 / 0.040
G18     75.3           24.9               15.4 +/-    1.26      30.2 +/-    1.26  0.070 / 0.140
G19     210.7          17.1                0.6 +/-   18.03       1.5 +/-   18.03  0.060 / 0.130
G28     329.4          61.7               17.3 +/-    0.45      19.4 +/-    0.45  0.040 / 0.030
G30     63.5           78.8               19.6 +/-    0.82      20.0 +/-    0.82  0.030 / 0.030