PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-13:58:10
G01     101.2          28.0                9.3 +/-    1.80      17.0 +/-    1.80  0.060 / 0.150
G07     115.5          50.7                8.9 +/-    0.43      11.2 +/-    0.43  0.060 / 0.150
G08     41.6           14.0                5.3 +/-    1.12      13.5 +/-    1.12  0.060 / 0.060
G11     79.1           40.2                8.3 +/-    0.52      12.0 +/-    0.52  0.030 / 0.060
G13     306.7          30.1                7.3 +/-    1.58      12.8 +/-    1.58  0.020 / 0.040
G17     207.7          45.9               11.8 +/-    0.75      15.6 +/-    0.75  0.030 / 0.060
G19     210.4          19.5                8.4 +/-    1.88      18.8 +/-    1.88  0.030 / 0.030
G28     329.0          61.5                7.4 +/-    0.58       8.3 +/-    0.58  0.030 / 0.040
G30     38.1           79.6                8.4 +/-    0.48       8.5 +/-    0.48  0.070 / 0.140