PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-20:57:40
G02     9.8            70.6                7.4 +/-    1.47       7.8 +/-    1.47  0.060 / 0.090
G05     158.0          44.5                9.5 +/-    1.35      12.9 +/-    1.35  0.060 / 0.080
G06     44.5           31.1                7.5 +/-    1.54      12.8 +/-    1.54  0.030 / 0.040
G12     284.1          77.9                8.4 +/-    0.28       8.5 +/-    0.28  0.030 / 0.040
G19     84.6           19.7                8.2 +/-    2.47      18.2 +/-    2.47  0.220 / 0.260
G24     220.7          15.3               10.5 +/-    2.28      25.9 +/-    2.28  0.140 / 0.270
G25     314.0          37.9                7.9 +/-    0.82      12.0 +/-    0.82  0.030 / 0.030
G29     294.2          16.6                9.5 +/-    3.03      22.8 +/-    3.03  0.030 / 0.020