PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-23:12:30
G02     276.3          80.9                9.5 +/-    0.75       9.6 +/-    0.75  0.110 / 0.250
G05     168.1          23.0               15.0 +/-    2.25      30.6 +/-    2.25  0.110 / 0.270
G06     39.0           53.6                9.1 +/-    0.62      11.0 +/-    0.62  0.040 / 0.040
G12     320.2          56.3                8.3 +/-    1.11       9.8 +/-    1.11  0.040 / 0.030
G17     76.4           17.9                8.9 +/-    1.27      20.6 +/-    1.27  0.080 / 0.150
G19     64.0           33.7                9.1 +/-    0.75      14.8 +/-    0.75  0.090 / 0.140
G24     237.2          30.2               11.6 +/-    1.47      20.2 +/-    1.47  0.040 / 0.060
G25     317.3          18.6                9.9 +/-    1.51      22.5 +/-    1.51  0.050 / 0.050