PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-08:58:00
G03     212.5          54.7                4.2 +/-    1.07       5.0 +/-    1.07  0.040 / 0.040
G07     261.8          20.8                5.4 +/-    1.20      11.7 +/-    1.20  0.040 / 0.050
G09     313.7          34.9                2.8 +/-    2.41       4.4 +/-    2.41  0.060 / 0.110
G16     85.5           65.3                6.5 +/-    0.69       7.1 +/-    0.69  0.060 / 0.110
G22     186.1          36.8                3.7 +/-    1.40       5.6 +/-    1.40  0.150 / 0.270
G23     332.8          62.6                4.8 +/-    0.76       5.3 +/-    0.76  0.130 / 0.180
G26     50.8           41.4                4.3 +/-    1.07       6.1 +/-    1.07  0.080 / 0.210
G27     129.1          14.4                5.1 +/-    2.44      12.8 +/-    2.44  0.150 / 0.220