PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-14:28:00
G01     81.3           32.9                3.9 +/-   10.76       6.5 +/-   10.76  0.190 / 0.280
G07     131.5          36.0                8.7 +/-    0.99      13.6 +/-    0.99  0.250 / 0.300
G11     59.7           33.7                7.5 +/-    2.38      12.2 +/-    2.38  0.050 / 0.060
G13     288.2          36.5               10.3 +/-    6.80      15.9 +/-    6.80  0.030 / 0.070
G15     312.5          11.3                2.7 +/-   13.97       7.2 +/-   13.97  0.050 / 0.090
G17     220.9          63.4               10.4 +/-    1.30      11.5 +/-    1.30  0.050 / 0.080
G19     218.2          35.6                0.8 +/-   36.55       1.3 +/-   36.55  0.040 / 0.020
G28     3.3            60.8                6.6 +/-    1.46       7.4 +/-    1.46  0.030 / 0.020
G30     119.4          72.5                9.5 +/-    3.93       9.9 +/-    3.93  0.070 / 0.090