PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-15:42:50
G07     326.4          55.4               12.2 +/-    0.33      14.5 +/-    0.33  0.040 / 0.040
G08     109.2          50.8               13.1 +/-    0.38      16.4 +/-    0.38  0.040 / 0.040
G09     199.6          77.7               12.0 +/-    0.41      12.3 +/-    0.41  0.040 / 0.050
G11     149.0          10.5                3.0 +/-   22.73       8.4 +/-   22.73  0.030 / 0.050
G23     152.7          42.0               12.3 +/-    0.78      17.3 +/-    0.78  0.070 / 0.100
G27     59.0           33.5               10.9 +/-    1.26      17.8 +/-    1.26  0.060 / 0.130
G28     234.3          26.4               14.0 +/-    2.26      26.4 +/-    2.26  0.050 / 0.070
G30     299.0          32.9               10.6 +/-    2.76      17.5 +/-    2.76  0.060 / 0.080