PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-19:58:00
G02     249.1          77.2                7.8 +/-    0.54       8.0 +/-    0.54  0.110 / 0.300
G05     170.4          18.3               11.2 +/-    1.95      25.7 +/-    1.95  0.120 / 0.400
G06     39.8           56.7                7.4 +/-    0.54       8.7 +/-    0.54  0.030 / 0.050
G12     320.9          52.0                8.0 +/-    1.40       9.8 +/-    1.40  0.030 / 0.030
G17     71.5           22.3                7.4 +/-    2.64      15.4 +/-    2.64  0.080 / 0.120
G19     59.6           36.2                7.2 +/-    1.84      11.2 +/-    1.84  0.090 / 0.120
G24     242.9          33.4                9.9 +/-    2.79      16.2 +/-    2.79  0.040 / 0.040
G25     316.6          13.5                7.6 +/-    3.86      19.5 +/-    3.86  0.040 / 0.050