PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-19:43:10
G01     318.0          20.1                8.9 +/-    1.97      19.5 +/-    1.97  0.140 / 0.350
G08     255.2          11.7               11.7 +/-    2.69      31.3 +/-    2.69  0.180 / 0.420
G10     83.4           52.3                7.1 +/-    0.73       8.7 +/-    0.73  0.030 / 0.030
G11     301.2          24.0                9.7 +/-    1.02      19.3 +/-    1.02  0.030 / 0.040
G14     306.4          71.0                8.0 +/-    1.00       8.4 +/-    1.00  0.030 / 0.040
G18     104.8          25.6               10.3 +/-    0.77      19.8 +/-    0.77  0.030 / 0.040
G22     301.8          11.9                8.5 +/-    3.86      22.6 +/-    3.86  0.050 / 0.070
G31     177.1          43.6               12.1 +/-    1.06      16.7 +/-    1.06  0.040 / 0.070
G32     10.4           66.0                7.0 +/-    0.55       7.6 +/-    0.55  0.170 / 0.240