PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-14:58:10
G08     298.2          21.7                6.0 +/-    1.40      12.7 +/-    1.40  0.050 / 0.090
G10     359.3          62.8                5.4 +/-    0.52       6.0 +/-    0.52  0.040 / 0.070
G14     227.4          42.6                9.6 +/-    0.95      13.5 +/-    0.95  0.040 / 0.080
G21     144.1          40.3                8.6 +/-    1.46      12.5 +/-    1.46  0.050 / 0.090
G24     59.8           27.5                4.9 +/-    0.72       9.0 +/-    0.72  0.050 / 0.100
G27     256.6          33.0                7.7 +/-    1.28      12.7 +/-    1.28  0.050 / 0.090
G32     240.7          65.5                7.8 +/-    0.51       8.5 +/-    0.51  0.070 / 0.080