PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-19:43:10
G01     317.2          21.6                9.9 +/-    2.87      20.9 +/-    2.87  0.110 / 0.230
G08     253.6          10.8               10.5 +/-    4.13      28.8 +/-    4.13  0.120 / 0.350
G10     86.1           51.2                9.5 +/-    0.67      11.8 +/-    0.67  0.240 / 0.270
G11     299.5          24.7                9.0 +/-    1.99      17.7 +/-    1.99  0.270 / 0.340
G14     312.4          71.1                9.5 +/-    0.49      10.0 +/-    0.49  0.070 / 0.030
G18     106.3          24.3                9.4 +/-    2.07      18.7 +/-    2.07  0.060 / 0.040
G22     302.7          13.2                9.3 +/-    4.95      24.1 +/-    4.95  0.040 / 0.020
G25     97.0           10.5                3.8 +/-   30.32      10.4 +/-   30.32  0.030 / 0.030
G31     176.7          45.7               12.3 +/-    0.91      16.5 +/-    0.91  0.040 / 0.030
G32     13.8           64.7                8.6 +/-    0.53       9.4 +/-    0.53  0.040 / 0.030