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               10.6 +/-    1.75      17.1 +/-    1.75  0.120 / 0.110
G03     315.5          46.2                7.6 +/-    0.94      10.1 +/-    0.94  0.130 / 0.100
G14     63.3           38.7                8.7 +/-    1.26      12.9 +/-    1.26  0.040 / 0.080
G16     162.3          20.0               -2.3 +/-   16.72      -5.2 +/-   16.72  0.050 / 0.080
G18     215.6          24.1                8.9 +/-    1.95      17.8 +/-    1.95  0.050 / 0.090
G22     300.8          68.0                9.1 +/-    0.30       9.8 +/-    0.30  0.050 / 0.070
G23     287.8          19.3                8.3 +/-    1.50      18.7 +/-    1.50  0.100 / 0.230
G26     136.9          39.4               10.9 +/-    0.58      16.1 +/-    0.58  0.140 / 0.290
G31     40.0           59.9                8.1 +/-    0.93       9.1 +/-    0.93  0.040 / 0.040
G32     79.0           22.0                7.4 +/-    1.64      15.5 +/-    1.64  0.040 / 0.030