PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-14:27:40
G03     186.4          11.1                9.8 +/-    4.86      26.6 +/-    4.86  0.050 / 0.070
G07     301.3          43.3               10.3 +/-    2.85      14.2 +/-    2.85  0.050 / 0.080
G08     134.6          36.6               11.5 +/-    0.78      17.7 +/-    0.78  0.140 / 0.060
G09     313.4          74.5               10.3 +/-    0.41      10.6 +/-    0.41  0.140 / 0.120
G16     41.7           26.7                7.8 +/-    2.17      14.6 +/-    2.17  0.070 / 0.170
G23     138.7          64.8               12.0 +/-    0.65      13.2 +/-    0.65  0.120 / 0.190
G27     85.4           36.9                9.6 +/-    0.93      14.7 +/-    0.93  0.030 / 0.040
G30     282.3          19.4               10.5 +/-    1.23      23.3 +/-    1.23  0.030 / 0.040