PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-14:13:00
G03     189.0          16.9               10.8 +/-    2.17      25.6 +/-    2.17  0.070 / 0.110
G07     294.2          39.5               10.1 +/-    3.08      14.7 +/-    3.08  0.080 / 0.090
G08     140.2          30.9               11.5 +/-    0.78      19.8 +/-    0.78  0.090 / 0.120
G09     319.3          67.5                9.2 +/-    0.62       9.9 +/-    0.62  0.220 / 0.140
G16     41.9           33.0                8.5 +/-    1.58      14.0 +/-    1.58  0.130 / 0.250
G23     128.9          71.7               11.4 +/-    0.64      11.9 +/-    0.64  0.140 / 0.240
G27     94.2           35.3                9.8 +/-    0.76      15.5 +/-    0.76  0.030 / 0.030
G30     277.0          15.4                9.0 +/-    1.27      22.1 +/-    1.27  0.030 / 0.030