PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-11:27:30
G10     249.6          25.3                5.6 +/-    1.80      10.9 +/-    1.80  0.050 / 0.040
G13     55.2           31.3                4.4 +/-    1.45       7.5 +/-    1.45  0.050 / 0.040
G15     86.0           56.7                6.5 +/-    0.70       7.7 +/-    0.70  0.080 / 0.280
G16     298.6          14.7                0.7 +/-    2.59       1.8 +/-    2.59  0.080 / 0.270
G20     37.3           54.7                4.2 +/-    0.57       5.1 +/-    0.57  0.030 / 0.050
G21     335.9          61.3                3.6 +/-    0.65       4.0 +/-    0.65  0.030 / 0.040
G26     269.3          16.0                5.2 +/-    1.47      12.6 +/-    1.47  0.090 / 0.110
G29     163.6          49.3                6.7 +/-    0.77       8.6 +/-    0.77  0.080 / 0.130