PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-14:43:10
G01     72.4           32.8                9.1 +/-    1.39      15.0 +/-    1.39  0.030 / 0.040
G07     136.3          29.3                8.9 +/-    1.24      15.7 +/-    1.24  0.040 / 0.040
G11     53.7           29.1                7.2 +/-    0.60      12.8 +/-    0.60  0.050 / 0.120
G13     278.8          36.9               10.2 +/-    0.63      15.6 +/-    0.63  0.080 / 0.120
G15     306.6          13.7                6.1 +/-    1.71      15.8 +/-    1.71  0.030 / 0.040
G17     232.0          70.5               11.1 +/-    0.60      11.7 +/-    0.60  0.030 / 0.050
G19     223.1          42.6               12.0 +/-    1.36      16.8 +/-    1.36  0.050 / 0.080
G28     17.0           59.5                9.2 +/-    0.64      10.5 +/-    0.64  0.060 / 0.080
G30     132.4          65.7               10.1 +/-    0.53      10.9 +/-    0.53  0.070 / 0.120