PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-19:57:30
G02     249.1          77.2                8.8 +/-    0.38       9.0 +/-    0.38  0.110 / 0.150
G05     170.4          18.3               10.8 +/-    1.14      24.8 +/-    1.14  0.120 / 0.130
G06     39.8           56.7                8.4 +/-    0.24       9.8 +/-    0.24  0.090 / 0.230
G12     320.9          52.0                8.9 +/-    1.24      10.9 +/-    1.24  0.090 / 0.320
G17     71.5           22.3                6.7 +/-    0.67      13.9 +/-    0.67  0.030 / 0.040
G19     59.6           36.2                7.2 +/-    0.77      11.2 +/-    0.77  0.030 / 0.040
G24     242.9          33.4               10.6 +/-    1.25      17.4 +/-    1.25  0.040 / 0.050
G25     316.6          13.5                8.7 +/-    2.37      22.5 +/-    2.37  0.050 / 0.060