PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-12:27:50
G01     237.3          26.7                5.8 +/-    2.41      11.0 +/-    2.41  0.060 / 0.100
G03     308.3          58.8                4.4 +/-    0.93       5.0 +/-    0.93  0.040 / 0.100
G14     71.4           36.3                6.0 +/-    1.76       9.2 +/-    1.76  0.030 / 0.030
G16     154.5          32.5                6.0 +/-    1.71      10.0 +/-    1.71  0.040 / 0.020
G18     212.3          17.1                4.2 +/-    2.09       9.9 +/-    2.09  0.080 / 0.130
G22     248.3          77.6                6.0 +/-    0.44       6.1 +/-    0.44  0.080 / 0.150
G23     299.5          32.1                4.8 +/-    2.19       8.0 +/-    2.19  0.070 / 0.100
G26     117.2          48.7                6.3 +/-    0.68       8.1 +/-    0.68  0.080 / 0.110
G31     41.8           42.4                4.0 +/-    1.32       5.5 +/-    1.32  0.070 / 0.120
G32     89.5           12.9                4.6 +/-    3.14      12.1 +/-    3.14  0.040 / 0.150