PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-08:58:10
G02     228.0          72.3                6.8 +/-    0.56       7.1 +/-    0.56  0.100 / 0.290
G05     174.3          10.9               -5.3 +/-   13.65     -14.5 +/-   13.65  0.170 / 0.270
G06     43.7           70.7                5.1 +/-    0.50       5.3 +/-    0.50  0.040 / 0.070
G12     320.7          44.1                4.6 +/-    0.59       6.3 +/-    0.59  0.060 / 0.080
G17     66.5           25.4                4.8 +/-    2.71       9.3 +/-    2.71  0.050 / 0.050
G19     52.0           41.6                5.1 +/-    0.79       7.2 +/-    0.79  0.050 / 0.040
G24     253.9          38.1                4.9 +/-    2.50       7.4 +/-    2.50  0.030 / 0.020