PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/08-20:12:40
G01     317.1          21.7                9.1 +/-    2.60      19.2 +/-    2.60  0.180 / 0.190
G08     253.3          10.7                8.0 +/-    3.02      22.1 +/-    3.02  0.180 / 0.410
G10     86.4           51.1                9.1 +/-    0.97      11.4 +/-    0.97  0.050 / 0.060
G11     299.1          24.9                8.3 +/-    1.30      16.3 +/-    1.30  0.040 / 0.040
G14     313.4          71.2                8.8 +/-    0.37       9.3 +/-    0.37  0.250 / 0.330
G18     106.3          24.3               10.0 +/-    1.61      19.8 +/-    1.61  0.260 / 0.300
G22     302.7          13.3                9.1 +/-    2.60      23.5 +/-    2.60  0.050 / 0.040
G25     96.7           10.6                9.4 +/-   15.08      25.9 +/-   15.08  0.050 / 0.040
G31     177.0          45.6               11.2 +/-    0.88      14.9 +/-    0.88  0.250 / 0.220
G32     13.6           64.7                9.0 +/-    0.53       9.8 +/-    0.53  0.170 / 0.220