PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/19-07:12:50
G01     122.8          15.0                6.9 +/-    1.88      17.2 +/-    1.88  0.030 / 0.040
G07     71.4           67.5                4.6 +/-    0.94       5.0 +/-    0.94  0.040 / 0.030
G08     46.1           33.0                2.6 +/-    0.73       4.3 +/-    0.73  0.030 / 0.040
G09     174.0          26.1                6.4 +/-    2.09      12.2 +/-    2.09  0.030 / 0.040
G11     110.3          38.3                6.3 +/-    0.54       9.4 +/-    0.54  0.130 / 0.260
G13     319.3          16.3                0.6 +/-    2.77       1.3 +/-    2.77  0.140 / 0.240
G17     199.8          22.1                5.7 +/-    1.50      12.0 +/-    1.50  0.110 / 0.370
G18     96.6           19.0                6.2 +/-    1.32      13.9 +/-    1.32  0.090 / 0.340
G28     283.1          54.6                5.4 +/-    0.90       6.5 +/-    0.90  0.110 / 0.250
G30     336.8          63.7                3.2 +/-    0.69       3.5 +/-    0.69  0.090 / 0.220