PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-13:57:40
G08     298.6          21.5                4.6 +/-    1.48       9.8 +/-    1.48  0.060 / 0.090
G10     359.8          62.8                4.5 +/-    0.50       5.0 +/-    0.50  0.070 / 0.070
G14     227.5          42.3                5.5 +/-    1.90       7.7 +/-    1.90  0.050 / 0.060
G21     144.4          40.9                5.3 +/-    0.76       7.6 +/-    0.76  0.050 / 0.070
G24     59.5           27.3                4.4 +/-    0.72       8.2 +/-    0.72  0.060 / 0.110
G27     256.4          32.9                4.8 +/-    2.75       7.9 +/-    2.75  0.090 / 0.080
G32     241.2          66.0                5.0 +/-    0.58       5.5 +/-    0.58  0.080 / 0.070