PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-21:58:00
G01     224.7          15.8                5.8 +/-   12.86      14.1 +/-   12.86  0.350 / 0.270
G03     282.6          68.6                7.3 +/-    1.08       7.7 +/-    1.08  0.260 / 0.230
G09     295.7          10.5              -14.9 +/-   10.13     -41.1 +/-   10.13  0.100 / 0.190
G14     88.5           22.4                7.3 +/-    2.01      15.1 +/-    2.01  0.080 / 0.180
G16     146.1          46.2               10.1 +/-    1.02      13.4 +/-    1.02  0.030 / 0.040
G22     213.5          69.0                8.6 +/-    0.53       9.1 +/-    0.53  0.030 / 0.040
G23     307.6          36.9                7.9 +/-    0.85      12.1 +/-    0.85  0.050 / 0.060
G26     98.1           55.3                8.6 +/-    0.49      10.2 +/-    0.49  0.050 / 0.060
G31     44.9           34.2                6.8 +/-    1.01      11.0 +/-    1.01  0.040 / 0.030