PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/24-10:57:40
G01     62.3           31.3                4.4 +/-    1.42       7.4 +/-    1.42  0.040 / 0.040
G07     141.2          23.4                5.9 +/-    0.91      11.9 +/-    0.91  0.050 / 0.040
G11     48.5           24.2                3.0 +/-    1.40       5.9 +/-    1.40  0.050 / 0.080
G13     264.6          36.1                9.2 +/-    0.94      14.3 +/-    0.94  0.050 / 0.080
G15     300.3          14.1                1.5 +/-    0.82       3.8 +/-    0.82  0.070 / 0.130
G17     255.5          76.8                5.7 +/-    0.94       5.8 +/-    0.94  0.070 / 0.140
G18     42.6           13.0                1.3 +/-    0.89       3.5 +/-    0.89  0.080 / 0.180
G19     229.8          44.3                8.8 +/-    0.96      12.0 +/-    0.96  0.090 / 0.240
G28     30.7           57.8                4.5 +/-    0.32       5.3 +/-    0.32  0.090 / 0.210
G30     142.7          56.1                7.8 +/-    1.45       9.2 +/-    1.45  0.090 / 0.180