PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-21:58:00
G01     255.7          37.2               10.4 +/-    0.94      15.9 +/-    0.94  0.030 / 0.050
G03     316.4          40.0               10.4 +/-    1.59      15.2 +/-    1.59  0.030 / 0.040
G11     240.9          14.9                9.8 +/-    1.86      24.5 +/-    1.86  0.070 / 0.100
G14     56.5           42.9                7.7 +/-    0.79      10.7 +/-    0.79  0.050 / 0.090
G22     309.0          61.9                9.6 +/-    0.99      10.8 +/-    0.99  0.030 / 0.040
G23     283.5          16.4                9.4 +/-    3.05      22.6 +/-    3.05  0.020 / 0.040
G25     42.4           12.0                7.0 +/-    1.57      18.6 +/-    1.57  0.130 / 0.220
G26     141.8          34.0               13.3 +/-    0.31      21.4 +/-    0.31  0.130 / 0.280
G31     41.8           64.6                8.5 +/-    0.53       9.3 +/-    0.53  0.050 / 0.100
G32     73.7           26.1                8.7 +/-    1.40      16.6 +/-    1.40  0.050 / 0.080