PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-08:28:10
G03     222.9          62.6                5.1 +/-    1.44       5.6 +/-    1.44  0.040 / 0.050
G07     253.5          12.4                5.1 +/-    5.49      13.4 +/-    5.49  0.040 / 0.060
G09     308.8          26.6                3.6 +/-    1.80       6.8 +/-    1.80  0.350 / 0.250
G14     105.7          10.6                3.4 +/-    2.19       9.3 +/-    2.19  0.240 / 0.440
G16     101.8          63.0                5.5 +/-    0.46       6.1 +/-    0.46  0.170 / 0.330
G22     190.6          46.6                6.2 +/-    0.89       8.1 +/-    0.89  0.190 / 0.360
G23     326.5          56.4                5.0 +/-    0.97       5.9 +/-    0.97  0.030 / 0.050
G26     56.5           44.7                4.3 +/-    0.83       5.8 +/-    0.83  0.040 / 0.040
G31     57.4           11.5                1.3 +/-    0.83       3.5 +/-    0.83  0.040 / 0.040