PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-14:57:40
G03     196.8          37.5               10.0 +/-    1.23      15.2 +/-    1.23  0.140 / 0.340
G07     273.0          26.6               11.2 +/-    1.02      21.1 +/-    1.02  0.140 / 0.460
G08     155.5          12.3               11.8 +/-    3.57      31.3 +/-    3.57  0.140 / 0.290
G09     318.2          44.8                6.1 +/-    1.28       8.2 +/-    1.28  0.110 / 0.350
G16     53.6           53.8                8.6 +/-    0.44      10.3 +/-    0.44  0.030 / 0.040
G22     179.5          19.1                9.2 +/-    1.41      20.7 +/-    1.41  0.040 / 0.040
G23     23.5           79.5                8.7 +/-    0.67       8.9 +/-    0.67  0.040 / 0.050
G26     43.6           25.1                9.4 +/-    0.94      18.3 +/-    0.94  0.040 / 0.060
G27     118.1          23.9               11.0 +/-    2.03      22.1 +/-    2.03  0.060 / 0.140