PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-08:13:00
G03     225.7          62.7                4.0 +/-    0.69       4.4 +/-    0.69  0.030 / 0.060
G07     254.5          14.9                4.3 +/-    1.81      10.8 +/-    1.81  0.030 / 0.060
G09     309.3          27.6                0.2 +/-    0.94       0.3 +/-    0.94  0.040 / 0.070
G16     111.6          64.3                6.2 +/-    0.52       6.7 +/-    0.52  0.060 / 0.080
G22     189.6          46.6                3.0 +/-    1.11       4.0 +/-    1.11  0.080 / 0.230
G23     324.7          54.6                3.5 +/-    0.96       4.2 +/-    0.96  0.090 / 0.230
G26     59.6           48.5                3.4 +/-    1.02       4.4 +/-    1.02  0.040 / 0.040
G31     56.4           14.2                2.1 +/-    0.95       5.4 +/-    0.95  0.030 / 0.040