PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-10:58:10
G10     249.4          25.3                3.4 +/-    1.79       6.6 +/-    1.79  0.030 / 0.050
G13     55.4           31.3                3.8 +/-    1.32       6.6 +/-    1.32  0.030 / 0.050
G15     86.4           56.7                3.6 +/-    0.43       4.2 +/-    0.43  0.030 / 0.050
G16     298.5          14.8                2.5 +/-    1.72       6.3 +/-    1.72  0.050 / 0.050
G20     36.8           55.1                2.5 +/-    0.42       3.0 +/-    0.42  0.140 / 0.420
G21     335.2          60.9                3.6 +/-    0.72       4.1 +/-    0.72  0.170 / 0.550
G26     269.2          16.1                4.8 +/-    2.20      11.7 +/-    2.20  0.090 / 0.140
G29     163.6          49.7                5.6 +/-    0.92       7.1 +/-    0.92  0.100 / 0.110