PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-15:57:30
G08     304.5          21.7                4.3 +/-    1.68       9.0 +/-    1.68  0.040 / 0.060
G10     341.0          61.2                6.2 +/-    0.51       7.0 +/-    0.51  0.040 / 0.060
G14     220.0          35.1                8.6 +/-    0.91      13.7 +/-    0.91  0.040 / 0.040
G20     45.0           58.6                7.9 +/-    0.38       9.1 +/-    0.38  0.030 / 0.040
G21     137.7          49.3               10.0 +/-    0.99      12.7 +/-    0.99  0.050 / 0.110
G24     65.6           27.4                6.6 +/-    0.69      12.2 +/-    0.69  0.060 / 0.120
G27     273.2          36.1                9.0 +/-    0.72      14.0 +/-    0.72  0.070 / 0.120
G32     226.6          54.7               10.0 +/-    0.58      12.0 +/-    0.58  0.070 / 0.120