PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-10:13:00
G10     242.0          18.3                4.7 +/-    2.03      10.7 +/-    2.03  0.100 / 0.340
G13     65.7           35.3                4.9 +/-    1.53       7.7 +/-    1.53  0.120 / 0.300
G15     106.0          56.2                6.5 +/-    0.93       7.6 +/-    0.93  0.040 / 0.040
G16     307.5          14.0                4.3 +/-    1.40      10.9 +/-    1.40  0.050 / 0.030
G20     27.4           64.0                3.9 +/-    0.42       4.3 +/-    0.42  0.030 / 0.050
G21     323.5          54.3                3.4 +/-    0.49       4.0 +/-    0.49  0.030 / 0.040
G26     278.6          19.1                4.8 +/-    1.03      10.8 +/-    1.03  0.080 / 0.140
G29     160.1          60.9                6.1 +/-    0.46       6.9 +/-    0.46  0.090 / 0.120