PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/08-18:13:00
G03     212.4          60.8               11.3 +/-    1.23      12.7 +/-    1.23  0.040 / 0.070
G07     253.1          11.6                3.7 +/-   20.53       9.9 +/-   20.53  0.050 / 0.060
G09     307.4          23.1                9.7 +/-    2.11      19.8 +/-    2.11  0.180 / 0.360
G14     105.4          11.0               11.0 +/-    2.27      30.1 +/-    2.27  0.200 / 0.390
G16     109.2          63.6               12.1 +/-    0.94      13.3 +/-    0.94  0.060 / 0.190
G22     188.2          45.5               12.5 +/-    0.94      16.8 +/-    0.94  0.070 / 0.130
G23     328.0          57.5                9.8 +/-    0.50      11.3 +/-    0.50  0.040 / 0.030
G26     57.9           46.2               12.5 +/-    0.66      16.6 +/-    0.66  0.040 / 0.040
G31     56.8           12.9                7.0 +/-    1.38      18.4 +/-    1.38  0.040 / 0.040