PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-14:57:50
G02     227.5          65.4                6.3 +/-    0.89       6.9 +/-    0.89  0.040 / 0.040
G06     43.4           63.6                5.7 +/-    0.43       6.3 +/-    0.43  0.030 / 0.040
G12     322.0          49.1                5.6 +/-    0.52       7.1 +/-    0.52  0.030 / 0.030
G17     66.4           24.9                6.7 +/-    1.60      13.1 +/-    1.60  0.030 / 0.030
G19     46.0           46.4                5.5 +/-    0.91       7.2 +/-    0.91  0.060 / 0.090
G24     249.3          38.0                6.9 +/-    1.01      10.4 +/-    1.01  0.050 / 0.080