PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-10:57:50
G10     242.0          18.3                3.3 +/-    1.44       7.7 +/-    1.44  0.130 / 0.280
G13     65.8           35.4                5.0 +/-    0.61       7.9 +/-    0.61  0.110 / 0.260
G15     105.9          56.2                7.3 +/-    0.46       8.6 +/-    0.46  0.040 / 0.050
G16     307.9          13.8                2.4 +/-    2.23       6.2 +/-    2.23  0.030 / 0.050
G20     28.2           63.5                4.0 +/-    0.68       4.4 +/-    0.68  0.030 / 0.030
G21     324.0          54.6                2.6 +/-    1.17       3.1 +/-    1.17  0.030 / 0.040
G26     278.9          19.0                2.9 +/-    1.07       6.6 +/-    1.07  0.040 / 0.070
G29     159.9          60.5                7.8 +/-    1.01       8.8 +/-    1.01  0.040 / 0.060