PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-05:28:00
G10     248.2          24.4                7.6 +/-    1.17      15.0 +/-    1.17  0.100 / 0.250
G13     56.5           31.7                3.4 +/-    1.77       5.7 +/-    1.77  0.100 / 0.300
G15     91.8           57.6                4.8 +/-    0.72       5.6 +/-    0.72  0.050 / 0.040
G16     298.0          15.6                3.3 +/-    1.46       8.1 +/-    1.46  0.050 / 0.050
G20     304.8          70.5                4.3 +/-    0.49       4.6 +/-    0.49  0.030 / 0.050
G21     330.0          58.0                4.0 +/-    1.07       4.7 +/-    1.07  0.050 / 0.050
G26     269.3          16.8                6.5 +/-    1.27      15.6 +/-    1.27  0.050 / 0.040
G29     164.2          53.6                5.5 +/-    0.32       6.6 +/-    0.32  0.050 / 0.040