PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/10-07:43:10
G02     36.1           53.1                2.6 +/-    1.27       3.2 +/-    1.27  0.030 / 0.030
G05     135.5          63.0                4.6 +/-    0.33       5.1 +/-    0.33  0.030 / 0.030
G06     53.4           17.8                1.7 +/-    3.94       4.0 +/-    3.94  0.280 / 0.350
G12     202.3          68.2                4.6 +/-    0.32       5.0 +/-    0.32  0.270 / 0.320
G20     200.7          22.4                5.0 +/-    2.00      10.3 +/-    2.00  0.190 / 0.280
G25     296.8          53.2                3.2 +/-    2.90       3.9 +/-    2.90  0.330 / 0.260
G29     308.6          29.8                2.3 +/-    1.31       4.0 +/-    1.31  0.020 / 0.030