PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-06:27:40
G07     329.6          56.9                3.0 +/-    1.26       3.5 +/-    1.26  0.080 / 0.100
G08     100.8          50.5                5.6 +/-    0.67       7.0 +/-    0.67  0.080 / 0.130
G09     178.2          72.1                5.5 +/-    0.69       5.8 +/-    0.69  0.030 / 0.060
G11     146.6          11.8                5.5 +/-    4.64      14.7 +/-    4.64  0.040 / 0.050
G23     155.0          46.7                7.6 +/-    1.44      10.0 +/-    1.44  0.060 / 0.080
G27     59.6           34.3                2.9 +/-    0.78       4.6 +/-    0.78  0.040 / 0.080
G28     234.4          25.8                3.4 +/-    1.25       6.4 +/-    1.25  0.040 / 0.060
G30     298.4          31.5                3.6 +/-    1.30       6.1 +/-    1.30  0.040 / 0.070