PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/22-03:42:40
G03     220.9          61.1                6.6 +/-    0.70       7.4 +/-    0.70  0.030 / 0.070
G07     255.4          14.8                4.3 +/-    1.29      10.8 +/-    1.29  0.040 / 0.070
G09     309.5          27.1                2.2 +/-    1.70       4.0 +/-    1.70  0.040 / 0.040
G16     115.2          65.3                8.2 +/-    0.58       8.9 +/-    0.58  0.030 / 0.050
G22     190.4          45.5                6.2 +/-    1.69       8.4 +/-    1.69  0.070 / 0.180
G23     326.1          56.1                3.8 +/-    0.61       4.4 +/-    0.61  0.090 / 0.200
G26     60.1           50.0                5.5 +/-    0.92       6.9 +/-    0.92  0.120 / 0.350
G31     56.4           15.9                1.6 +/-    1.50       3.8 +/-    1.50  0.120 / 0.340