PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-13:57:40
G01     227.2          18.7                7.5 +/-    2.14      17.1 +/-    2.14  0.150 / 0.210
G03     283.7          70.9                8.7 +/-    0.57       9.2 +/-    0.57  0.140 / 0.210
G14     84.8           24.8                8.7 +/-    1.53      17.1 +/-    1.53  0.220 / 0.290
G16     152.9          40.3                9.8 +/-    0.94      14.2 +/-    0.94  0.150 / 0.170
G22     205.9          70.0               10.2 +/-    1.07      10.8 +/-    1.07  0.030 / 0.040
G23     305.6          35.8                7.1 +/-    1.96      11.2 +/-    1.96  0.040 / 0.030
G26     106.8          54.3                9.9 +/-    0.51      11.9 +/-    0.51  0.130 / 0.190
G31     44.4           35.0                7.8 +/-    1.03      12.3 +/-    1.03  0.120 / 0.170
G32     95.6           11.9                7.6 +/-    2.09      20.2 +/-    2.09  0.040 / 0.040