PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/29-19:28:00
G07     323.8          54.2               12.6 +/-    0.52      15.2 +/-    0.52  0.040 / 0.040
G08     115.9          49.8               14.8 +/-    0.64      18.7 +/-    0.64  0.040 / 0.040
G09     212.2          80.0               14.1 +/-    0.45      14.3 +/-    0.45  0.050 / 0.060
G16     45.2           11.4               10.9 +/-    4.44      29.4 +/-    4.44  0.060 / 0.060
G23     152.1          44.7               15.2 +/-    0.85      20.6 +/-    0.85  0.110 / 0.120
G27     60.6           34.0               12.5 +/-    1.51      20.1 +/-    1.51  0.110 / 0.120
G28     233.0          25.2               17.2 +/-    3.15      33.4 +/-    3.15  0.030 / 0.020
G30     298.6          33.3                9.8 +/-    1.24      16.1 +/-    1.24  0.030 / 0.030