PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-18:13:10
G01     52.5           26.8                7.2 +/-    2.38      13.5 +/-    2.38  0.040 / 0.060
G06     178.8          20.5                9.3 +/-   15.23      20.2 +/-   15.23  0.030 / 0.070
G07     144.2          10.8               10.7 +/-   21.67      29.4 +/-   21.67  0.170 / 0.270
G11     45.2           17.6                7.1 +/-    1.94      16.4 +/-    1.94  0.160 / 0.330
G13     253.1          32.9                7.8 +/-    8.26      13.0 +/-    8.26  0.060 / 0.120
G15     286.2          16.3                7.8 +/-    5.66      18.8 +/-    5.66  0.060 / 0.110
G17     289.8          78.9               12.7 +/-   23.14      12.9 +/-   23.14  0.080 / 0.230
G19     240.8          57.9               10.2 +/-    4.95      11.8 +/-    4.95  0.110 / 0.220
G28     39.3           57.1                7.7 +/-    6.32       9.0 +/-    6.32  0.050 / 0.060
G30     147.3          41.7                9.0 +/-   12.02      12.7 +/-   12.02  0.050 / 0.060