PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-14:58:00
G01     58.8           29.8                7.9 +/-    1.44      13.8 +/-    1.44  0.090 / 0.200
G06     179.9          16.1               10.9 +/-    1.40      26.4 +/-    1.40  0.100 / 0.180
G07     142.4          18.3                8.4 +/-    0.95      19.3 +/-    0.95  0.090 / 0.240
G11     47.0           20.2                7.6 +/-    3.57      16.6 +/-    3.57  0.080 / 0.180
G13     263.6          34.5               10.3 +/-    0.88      16.4 +/-    0.88  0.070 / 0.140
G15     295.6          15.6                6.1 +/-    1.43      14.9 +/-    1.43  0.100 / 0.140
G17     273.1          79.2                9.3 +/-    0.65       9.4 +/-    0.65  0.030 / 0.050
G19     234.5          53.9                9.6 +/-    2.61      11.6 +/-    2.61  0.050 / 0.030
G28     37.8           56.2               10.5 +/-    2.09      12.4 +/-    2.09  0.030 / 0.010
G30     144.2          53.4                9.8 +/-    0.91      11.8 +/-    0.91  0.030 / 0.020