PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-17:43:10
G08     293.5          23.8               10.8 +/-    1.21      21.7 +/-    1.21  0.040 / 0.100
G10     4.1            62.8               10.1 +/-    0.32      11.2 +/-    0.32  0.060 / 0.090
G14     227.8          45.1               14.4 +/-    0.72      19.4 +/-    0.72  0.040 / 0.040
G20     62.5           53.3               10.6 +/-    0.58      12.8 +/-    0.58  0.040 / 0.030
G21     145.0          39.6               15.7 +/-    0.63      22.9 +/-    0.63  0.070 / 0.080
G24     54.3           23.3                9.7 +/-    1.00      19.7 +/-    1.00  0.080 / 0.080
G27     259.5          32.7               12.2 +/-    2.17      20.2 +/-    2.17  0.150 / 0.200
G32     241.2          65.4               13.4 +/-    0.81      14.6 +/-    0.81  0.120 / 0.180