PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-21:42:50
G01     266.8          40.3               12.4 +/-    1.08      17.9 +/-    1.08  0.050 / 0.050
G03     316.2          31.9               10.0 +/-    1.96      16.8 +/-    1.96  0.050 / 0.050
G10     131.4          15.1               13.4 +/-    2.82      33.1 +/-    2.82  0.030 / 0.030
G11     248.3          19.3               10.6 +/-    2.95      23.8 +/-    2.95  0.020 / 0.030
G14     47.1           48.1                9.5 +/-    0.62      12.3 +/-    0.62  0.180 / 0.160
G22     313.4          53.8               10.9 +/-    0.80      13.1 +/-    0.80  0.080 / 0.190
G25     49.4           15.7                9.6 +/-    2.26      23.4 +/-    2.26  0.040 / 0.060
G26     147.9          26.6               14.3 +/-    2.17      26.9 +/-    2.17  0.040 / 0.060
G31     50.8           73.4               11.8 +/-    0.37      12.2 +/-    0.37  0.070 / 0.080
G32     66.2           31.4                9.6 +/-    0.97      16.4 +/-    0.97  0.060 / 0.090