PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-05:27:10
G02     223.5          69.8                5.6 +/-    0.73       6.0 +/-    0.73  0.050 / 0.100
G06     46.4           70.5                4.2 +/-    0.55       4.4 +/-    0.55  0.050 / 0.100
G12     320.2          41.5                4.3 +/-    0.78       6.2 +/-    0.78  0.040 / 0.040
G17     63.0           28.8                1.6 +/-    1.72       2.8 +/-    1.72  0.030 / 0.030
G19     48.3           44.0                3.1 +/-    0.75       4.2 +/-    0.75  0.060 / 0.070
G24     256.9          39.2                6.9 +/-    1.16      10.2 +/-    1.16  0.070 / 0.090