PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-22:58:10
G03     227.8          65.4                8.9 +/-    1.16       9.6 +/-    1.16  0.050 / 0.050
G09     305.5          20.6                6.5 +/-    1.98      14.0 +/-    1.98  0.050 / 0.040
G14     103.1          11.8                9.2 +/-    1.81      24.6 +/-    1.81  0.180 / 0.230
G16     125.6          61.6               10.7 +/-    0.33      12.0 +/-    0.33  0.320 / 0.160
G22     193.0          51.7               10.2 +/-    0.57      12.6 +/-    0.57  0.030 / 0.030
G23     322.1          51.9                8.2 +/-    1.05      10.1 +/-    1.05  0.030 / 0.030
G26     64.8           50.8                6.1 +/-    1.26       7.7 +/-    1.26  0.120 / 0.280
G31     53.9           17.8                5.8 +/-    4.25      13.4 +/-    4.25  0.120 / 0.300