PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-11:42:40
G01     62.3           31.1                4.9 +/-    1.04       8.5 +/-    1.04  0.090 / 0.090
G06     181.6          12.2                6.2 +/-    5.33      16.4 +/-    5.33  0.070 / 0.120
G07     141.1          22.3                6.3 +/-    1.91      13.0 +/-    1.91  0.040 / 0.030
G11     48.8           23.6                3.7 +/-    2.82       7.5 +/-    2.82  0.040 / 0.030
G13     267.6          35.5                8.2 +/-    1.21      12.9 +/-    1.21  0.070 / 0.120
G15     296.9          16.1                6.5 +/-    2.10      15.7 +/-    2.10  0.070 / 0.120
G17     257.3          77.3                7.9 +/-    0.44       8.0 +/-    0.44  0.030 / 0.030
G19     231.0          50.8                9.5 +/-    2.04      11.9 +/-    2.04  0.030 / 0.020
G28     33.0           57.0                4.4 +/-    1.25       5.1 +/-    1.25  0.140 / 0.240
G30     141.7          55.6                7.4 +/-    0.43       8.7 +/-    0.43  0.250 / 0.280