PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/14-03:58:00
G01     108.9          24.3                7.9 +/-    0.94      15.7 +/-    0.94  0.040 / 0.030
G07     105.5          57.4                6.1 +/-    0.74       7.1 +/-    0.74  0.030 / 0.030
G08     41.6           19.5                2.0 +/-    2.05       4.4 +/-    2.05  0.110 / 0.130
G09     173.8          13.7                5.0 +/-    1.45      12.8 +/-    1.45  0.070 / 0.120
G11     89.2           42.4                5.3 +/-    1.00       7.4 +/-    1.00  0.080 / 0.120
G13     310.8          27.9                3.1 +/-    1.75       5.6 +/-    1.75  0.080 / 0.140
G17     203.8          38.5                7.2 +/-    1.33      10.8 +/-    1.33  0.040 / 0.040
G18     78.9           23.1                4.5 +/-    1.22       9.2 +/-    1.22  0.040 / 0.050
G28     309.7          59.8                4.9 +/-    1.00       5.6 +/-    1.00  0.030 / 0.020
G30     8.8            76.5                4.8 +/-    0.63       4.9 +/-    0.63  0.030 / 0.020