PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/24-18:57:40
G01     318.8          18.2               11.5 +/-    1.67      26.4 +/-    1.67  0.040 / 0.070
G08     257.4          12.9                9.1 +/-    2.04      23.8 +/-    2.04  0.050 / 0.080
G10     79.9           53.5               13.7 +/-    0.67      16.6 +/-    0.67  0.040 / 0.040
G11     303.5          22.7               11.2 +/-    0.76      23.0 +/-    0.76  0.040 / 0.040
G14     298.4          70.6               12.9 +/-    0.65      13.6 +/-    0.65  0.030 / 0.020
G18     102.9          27.1               12.2 +/-    0.87      22.7 +/-    0.87  0.030 / 0.020
G31     177.2          41.4               14.6 +/-    0.94      20.8 +/-    0.94  0.190 / 0.260
G32     6.7            67.5               11.9 +/-    0.50      12.8 +/-    0.50  0.350 / 0.380