PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/14-22:28:00
G01     219.3          10.3                9.9 +/-    6.53      27.5 +/-    6.53  0.240 / 0.350
G03     257.6          70.1                7.2 +/-    0.81       7.6 +/-    0.81  0.260 / 0.480
G09     300.7          16.1                5.2 +/-    2.30      12.7 +/-    2.30  0.060 / 0.090
G14     95.2           17.5                7.9 +/-    1.43      18.5 +/-    1.43  0.050 / 0.120
G16     137.2          53.7               -0.1 +/-    0.76      -0.1 +/-    0.76  0.050 / 0.060
G22     201.5          61.6                8.7 +/-    0.75       9.8 +/-    0.75  0.060 / 0.070
G23     313.3          42.7                6.7 +/-    1.70       9.3 +/-    1.70  0.130 / 0.410
G26     82.4           55.1                6.8 +/-    0.53       8.1 +/-    0.53  0.130 / 0.410
G31     48.4           27.4                5.4 +/-    0.72      10.0 +/-    0.72  0.030 / 0.050