PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-22:27:50
G01     101.1          28.4               16.5 +/-    1.08      29.8 +/-    1.08  0.070 / 0.110
G07     114.9          54.1               15.6 +/-    0.57      18.8 +/-    0.57  0.070 / 0.110
G08     42.1           19.0               12.0 +/-    1.05      27.0 +/-    1.05  0.030 / 0.050
G11     84.1           43.5               16.5 +/-    0.67      22.7 +/-    0.67  0.030 / 0.050
G13     305.1          31.5               12.9 +/-    1.03      21.9 +/-    1.03  0.060 / 0.070
G17     209.4          40.6               17.3 +/-    1.14      25.0 +/-    1.14  0.060 / 0.060
G18     352.8          -15.4              23.5 +/-    1.32      57.9 +/-    1.32  0.160 / 0.240
G19     210.9          18.0                3.9 +/-   21.00       9.0 +/-   21.00  0.110 / 0.330
G28     330.9          61.8               14.4 +/-    0.53      16.1 +/-    0.53  0.050 / 0.060
G30     70.3           78.3               15.8 +/-    0.87      16.1 +/-    0.87  0.060 / 0.070