PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-08:12:40
G01     129.0          10.0              -20.1 +/-   13.52     -56.1 +/-   13.52  0.030 / 0.040
G07     48.8           68.9                6.3 +/-    0.44       6.7 +/-    0.44  0.030 / 0.030
G08     51.8           40.2                6.3 +/-    0.83       9.2 +/-    0.83  0.060 / 0.080
G09     177.6          38.1                9.4 +/-    0.69      14.2 +/-    0.69  0.050 / 0.080
G11     119.7          32.9                8.7 +/-    0.79      14.4 +/-    0.79  0.060 / 0.080
G17     199.0          14.3                3.4 +/-    2.15       8.6 +/-    2.15  0.060 / 0.100
G23     161.2          11.6                3.4 +/-    2.23       9.3 +/-    2.23  0.170 / 0.330
G28     273.0          51.8                8.1 +/-    1.10      10.0 +/-    1.10  0.220 / 0.330
G30     329.5          57.7                5.3 +/-    0.63       6.1 +/-    0.63  0.040 / 0.050