PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-19:12:50
G07     300.5          42.9               11.3 +/-    2.62      15.7 +/-    2.62  0.050 / 0.070
G08     137.7          35.3               15.1 +/-    0.61      23.9 +/-    0.61  0.050 / 0.060
G09     314.5          72.4               12.1 +/-    0.60      12.6 +/-    0.60  0.030 / 0.040
G16     41.6           28.7               10.6 +/-    1.08      19.0 +/-    1.08  0.030 / 0.040
G23     138.0          66.2               13.5 +/-    0.56      14.6 +/-    0.56  0.030 / 0.030
G27     85.5           36.6               11.3 +/-    1.41      17.4 +/-    1.41  0.030 / 0.030
G30     282.7          21.1               11.4 +/-    2.13      24.4 +/-    2.13  0.080 / 0.090