PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-08:27:40
G01     229.3          19.9                7.9 +/-    3.31      17.3 +/-    3.31  0.030 / 0.030
G03     296.5          64.6                5.0 +/-    0.94       5.5 +/-    0.94  0.030 / 0.030
G14     81.9           28.7                4.3 +/-    1.57       7.7 +/-    1.57  0.290 / 0.420
G16     146.9          42.4                5.7 +/-    1.10       8.0 +/-    1.10  0.250 / 0.460
G22     224.1          73.1                5.6 +/-    0.25       5.8 +/-    0.25  0.050 / 0.070
G23     305.2          35.7                5.0 +/-    0.99       7.8 +/-    0.99  0.040 / 0.070
G26     100.7          52.8                4.9 +/-    0.82       6.0 +/-    0.82  0.070 / 0.160
G31     44.5           33.4                2.9 +/-    1.32       4.7 +/-    1.32  0.080 / 0.130