PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-20:58:00
G01     247.9          34.1                8.7 +/-    0.73      14.0 +/-    0.73  0.070 / 0.100
G03     315.5          46.2                6.8 +/-    1.09       9.0 +/-    1.09  0.060 / 0.110
G11     233.7          10.2               10.3 +/-    2.33      28.7 +/-    2.33  0.090 / 0.210
G14     63.3           38.7                7.1 +/-    0.55      10.6 +/-    0.55  0.090 / 0.250
G18     215.6          24.1                8.6 +/-    1.28      17.1 +/-    1.28  0.050 / 0.110
G22     300.8          68.0                7.0 +/-    0.92       7.5 +/-    0.92  0.050 / 0.100
G23     287.8          19.3                8.1 +/-    0.95      18.2 +/-    0.95  0.210 / 0.400
G26     136.9          39.4               10.1 +/-    0.77      14.9 +/-    0.77  0.220 / 0.370
G31     40.0           59.9                7.0 +/-    0.50       7.9 +/-    0.50  0.030 / 0.040
G32     79.0           22.0                6.7 +/-    0.82      14.0 +/-    0.82  0.040 / 0.040