PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/25-20:13:00
G01     289.7          40.3                6.7 +/-    2.51       9.7 +/-    2.51  0.050 / 0.080
G03     312.3          18.1               11.7 +/-    2.53      27.1 +/-    2.53  0.040 / 0.080
G10     120.4          28.6               14.7 +/-    0.78      26.5 +/-    0.78  0.100 / 0.120
G11     265.3          25.9               11.9 +/-    1.77      22.8 +/-    1.77  0.130 / 0.150
G14     25.3           58.3               11.0 +/-    1.33      12.7 +/-    1.33  0.020 / 0.020
G22     313.8          38.7                9.9 +/-    1.30      14.7 +/-    1.30  0.030 / 0.020
G25     65.8           18.9               11.3 +/-    2.26      25.6 +/-    2.26  0.050 / 0.050
G26     157.3          13.2               18.9 +/-    1.81      48.9 +/-    1.81  0.060 / 0.060
G31     132.5          79.4               12.7 +/-    0.55      12.9 +/-    0.55  0.050 / 0.050
G32     51.4           41.9                9.7 +/-    1.57      13.7 +/-    1.57  0.060 / 0.040