PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/10-12:57:50
G02     57.3           33.9                2.8 +/-    1.69       4.5 +/-    1.69  0.030 / 0.020
G05     66.2           65.0                4.8 +/-    0.59       5.2 +/-    0.59  0.020 / 0.020
G12     187.4          38.4                9.2 +/-    0.70      13.8 +/-    0.70  0.040 / 0.050
G13     132.7          12.2                6.1 +/-    2.22      16.2 +/-    2.22  0.030 / 0.040
G20     206.9          52.8                9.9 +/-    0.78      12.1 +/-    0.78  0.040 / 0.060
G21     269.6          19.2                4.4 +/-    2.16       9.8 +/-    2.16  0.040 / 0.060
G25     243.1          54.5                6.2 +/-    2.08       7.5 +/-    2.08  0.200 / 0.320
G29     329.0          54.6                3.9 +/-    0.93       4.6 +/-    0.93  0.140 / 0.260