PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-05:27:30
G02     226.4          71.6                2.6 +/-    0.83       2.7 +/-    0.83  0.040 / 0.040
G05     173.8          10.8               -5.2 +/-   17.73     -14.2 +/-   17.73  0.030 / 0.040
G06     44.4           68.5                2.9 +/-    0.48       3.1 +/-    0.48  0.110 / 0.240
G12     320.5          43.3                1.9 +/-    0.88       2.6 +/-    0.88  0.130 / 0.270
G17     64.6           27.7                0.4 +/-    1.30       0.8 +/-    1.30  0.070 / 0.100
G19     50.2           42.8                1.5 +/-    0.52       2.1 +/-    0.52  0.050 / 0.100
G24     254.6          38.5                4.0 +/-    1.18       6.0 +/-    1.18  0.030 / 0.080