PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/14-22:27:30
G03     257.6          70.1                8.1 +/-    0.77       8.5 +/-    0.77  0.090 / 0.070
G09     300.7          16.1                6.4 +/-    2.18      15.4 +/-    2.18  0.080 / 0.080
G14     95.2           17.5                7.5 +/-    1.46      17.4 +/-    1.46  0.100 / 0.200
G16     137.2          53.7                0.4 +/-    0.76       0.5 +/-    0.76  0.110 / 0.240
G22     201.5          61.6                8.5 +/-    0.23       9.5 +/-    0.23  0.040 / 0.040
G23     313.3          42.7                7.3 +/-    1.00      10.2 +/-    1.00  0.040 / 0.050
G26     82.4           55.1                7.6 +/-    0.75       9.1 +/-    0.75  0.040 / 0.030
G31     48.4           27.4                4.8 +/-    1.54       9.0 +/-    1.54  0.030 / 0.030