PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-15:42:50
G01     101.0          28.4                9.3 +/-    1.15      16.9 +/-    1.15  0.130 / 0.260
G07     115.1          53.9               10.0 +/-    0.72      12.1 +/-    0.72  0.150 / 0.220
G08     41.7           15.7                7.6 +/-    2.46      18.5 +/-    2.46  0.030 / 0.020
G11     80.7           42.4                9.3 +/-    1.58      12.9 +/-    1.58  0.030 / 0.020
G13     304.6          32.1                9.4 +/-    1.42      15.8 +/-    1.42  0.020 / 0.030
G17     208.8          42.8               11.6 +/-    0.98      16.2 +/-    0.98  0.030 / 0.030
G18     73.9           24.7                9.2 +/-    1.48      18.1 +/-    1.48  0.040 / 0.070
G19     211.2          16.1               13.2 +/-    1.85      32.0 +/-    1.85  0.050 / 0.080
G28     329.6          61.7                8.6 +/-    0.43       9.7 +/-    0.43  0.200 / 0.250
G30     53.2           79.9               10.1 +/-    0.64      10.3 +/-    0.64  0.080 / 0.200