PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-14:27:50
G07     24.8           69.1                9.2 +/-    0.47       9.7 +/-    0.47  0.030 / 0.030
G08     59.2           46.4                7.7 +/-    0.90      10.2 +/-    0.90  0.040 / 0.040
G09     178.3          44.8               10.4 +/-    0.76      14.0 +/-    0.76  0.040 / 0.050
G11     127.1          29.8               10.0 +/-    1.69      17.6 +/-    1.69  0.050 / 0.050
G18     111.7          12.0               10.7 +/-    1.64      28.6 +/-    1.64  0.080 / 0.190
G23     159.7          14.2               10.1 +/-    1.73      25.6 +/-    1.73  0.080 / 0.170
G27     39.2           14.4                8.0 +/-    1.49      20.2 +/-    1.49  0.080 / 0.170
G28     263.3          47.7                9.9 +/-    0.81      12.9 +/-    0.81  0.080 / 0.170
G30     323.2          53.0               11.2 +/-    0.78      13.6 +/-    0.78  0.100 / 0.270