PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-05:27:50
G10     249.7          25.7                6.6 +/-    1.69      12.6 +/-    1.69  0.130 / 0.520
G13     54.7           30.7                5.7 +/-    1.29       9.9 +/-    1.29  0.200 / 0.700
G15     88.0           57.4                5.4 +/-    0.77       6.2 +/-    0.77  0.050 / 0.050
G16     296.1          15.6                2.7 +/-    3.98       6.6 +/-    3.98  0.040 / 0.050
G20     308.9          70.6                4.4 +/-    0.55       4.6 +/-    0.55  0.090 / 0.110
G21     332.1          59.3                3.3 +/-    1.14       3.8 +/-    1.14  0.090 / 0.110
G26     267.5          16.1                6.0 +/-    3.91      14.5 +/-    3.91  0.050 / 0.050
G29     164.8          51.6                4.4 +/-    1.20       5.4 +/-    1.20  0.050 / 0.040