PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-05:12:40
G02     265.5          81.2                4.3 +/-    0.57       4.4 +/-    0.57  0.120 / 0.170
G05     169.1          21.0                6.1 +/-    1.13      13.1 +/-    1.13  0.110 / 0.170
G06     39.5           56.1                5.2 +/-    0.56       6.1 +/-    0.56  0.040 / 0.040
G12     320.9          55.2                3.9 +/-    0.78       4.7 +/-    0.78  0.040 / 0.040
G17     74.1           21.1                4.0 +/-    1.31       8.7 +/-    1.31  0.040 / 0.030
G19     62.0           35.6                4.2 +/-    1.15       6.5 +/-    1.15  0.040 / 0.030
G24     241.4          32.3                4.6 +/-    0.48       7.6 +/-    0.48  0.140 / 0.130
G25     317.4          15.5                0.3 +/-    1.83       0.8 +/-    1.83  0.090 / 0.210