PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-08:43:00
G01     225.3          16.2                4.1 +/-   11.77      10.0 +/-   11.77  0.040 / 0.040
G03     288.5          66.1                4.7 +/-    1.70       5.1 +/-    1.70  0.040 / 0.040
G14     88.5           22.0                3.9 +/-    1.66       8.2 +/-    1.66  0.150 / 0.220
G16     147.2          45.9                6.9 +/-    1.08       9.2 +/-    1.08  0.480 / 0.320
G22     210.4          69.8                4.6 +/-    0.69       4.9 +/-    0.69  0.060 / 0.080
G23     307.3          36.8                4.2 +/-    3.45       6.4 +/-    3.45  0.050 / 0.090
G26     97.8           54.8                2.2 +/-   27.99       2.6 +/-   27.99  0.040 / 0.070
G31     45.3           31.5                3.9 +/-    5.36       6.5 +/-    5.36  0.040 / 0.070