PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-19:12:30
G07     324.6          54.6               12.2 +/-    0.51      14.6 +/-    0.51  0.040 / 0.050
G08     115.3          50.2               14.2 +/-    0.55      17.9 +/-    0.55  0.040 / 0.050
G09     209.2          79.4               12.9 +/-    0.35      13.1 +/-    0.35  0.050 / 0.060
G16     45.4           10.8               10.7 +/-    1.86      29.3 +/-    1.86  0.050 / 0.070
G23     152.3          43.8               14.5 +/-    0.91      19.8 +/-    0.91  0.040 / 0.040
G27     60.0           33.8               11.5 +/-    1.62      18.7 +/-    1.62  0.030 / 0.040
G28     233.5          25.7               15.1 +/-    3.05      29.1 +/-    3.05  0.090 / 0.100
G30     299.0          33.6                9.9 +/-    0.95      16.1 +/-    0.95  0.070 / 0.110