PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-16:12:50
G08     292.0          23.9                8.5 +/-    0.67      17.1 +/-    0.67  0.030 / 0.030
G10     7.5            62.9                8.1 +/-    1.02       9.0 +/-    1.02  0.040 / 0.030
G14     229.1          46.6                9.0 +/-    2.11      11.8 +/-    2.11  0.040 / 0.070
G18     317.4          12.4                5.8 +/-    4.20      15.4 +/-    4.20  0.070 / 0.070
G20     64.6           52.5                9.9 +/-    0.72      12.1 +/-    0.72  0.090 / 0.120
G21     145.6          37.0               10.9 +/-    0.92      16.6 +/-    0.92  0.100 / 0.110
G24     53.6           23.1                7.2 +/-    1.39      14.8 +/-    1.39  0.090 / 0.110
G27     258.4          32.1                7.9 +/-    2.74      13.3 +/-    2.74  0.120 / 0.110
G32     243.3          65.8                9.6 +/-    0.57      10.4 +/-    0.57  0.110 / 0.120