PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/19-19:12:40
G07     27.4           69.3               12.4 +/-    0.76      13.2 +/-    0.76  0.130 / 0.310
G08     60.8           48.6               12.5 +/-    0.58      16.0 +/-    0.58  0.130 / 0.360
G09     179.8          45.1               13.6 +/-    0.58      18.2 +/-    0.58  0.060 / 0.050
G11     127.9          30.1               15.7 +/-    1.51      27.5 +/-    1.51  0.060 / 0.060
G18     111.3          12.6               13.0 +/-    1.55      34.2 +/-    1.55  0.040 / 0.040
G23     158.9          11.1               15.4 +/-    2.05      41.9 +/-    2.05  0.030 / 0.050
G27     38.7           13.0                9.0 +/-    2.03      23.4 +/-    2.03  0.350 / 0.370
G28     265.4          48.8               13.5 +/-    4.27      17.2 +/-    4.27  0.290 / 0.470
G30     326.7          55.7               11.3 +/-    0.66      13.4 +/-    0.66  0.100 / 0.120