PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-12:43:00
G01     234.7          24.6                5.3 +/-    1.08      10.4 +/-    1.08  0.070 / 0.090
G03     304.8          61.6                4.6 +/-    0.43       5.2 +/-    0.43  0.070 / 0.120
G14     74.5           34.4                6.5 +/-    1.91      10.4 +/-    1.91  0.070 / 0.110
G16     152.7          35.5                7.7 +/-    1.67      12.1 +/-    1.67  0.060 / 0.070
G18     210.4          14.8                5.7 +/-    1.95      14.2 +/-    1.95  0.120 / 0.210
G22     233.0          76.7                6.9 +/-    0.91       7.1 +/-    0.91  0.150 / 0.260
G23     302.0          34.3                3.8 +/-    1.34       6.1 +/-    1.34  0.080 / 0.110
G26     112.6          50.3                7.5 +/-    0.56       9.5 +/-    0.56  0.070 / 0.080
G31     42.5           39.6                5.6 +/-    0.98       8.2 +/-    0.98  0.040 / 0.040
G32     91.8           11.1                6.2 +/-    1.39      16.9 +/-    1.39  0.030 / 0.030