PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/16-03:27:50
G01     118.0          18.5                6.1 +/-    2.45      14.0 +/-    2.45  0.030 / 0.040
G07     87.2           64.0                4.3 +/-    0.55       4.7 +/-    0.55  0.030 / 0.040
G08     43.7           27.9                2.0 +/-    0.92       3.6 +/-    0.92  0.120 / 0.300
G09     175.3          23.1                5.7 +/-    1.80      11.7 +/-    1.80  0.190 / 0.270
G11     102.8          40.6                6.2 +/-    0.51       8.9 +/-    0.51  0.100 / 0.320
G13     316.9          20.8                1.9 +/-    2.13       4.0 +/-    2.13  0.090 / 0.260
G17     200.7          28.3                6.3 +/-    1.73      11.4 +/-    1.73  0.110 / 0.200
G18     89.4           20.9                5.1 +/-    1.12      11.0 +/-    1.12  0.110 / 0.240
G28     291.4          56.5               -4.7 +/-    0.80      -5.5 +/-    0.80  0.040 / 0.030
G30     345.4          68.7                1.7 +/-    0.94       1.8 +/-    0.94  0.030 / 0.040