PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-19:27:50
G02     241.1          75.0                9.7 +/-    0.33      10.0 +/-    0.33  0.380 / 0.390
G05     171.4          16.1               11.7 +/-    1.35      28.5 +/-    1.35  0.540 / 0.410
G06     40.4           59.0                9.5 +/-    0.49      10.9 +/-    0.49  0.040 / 0.030
G12     320.9          49.6                8.4 +/-    0.84      10.7 +/-    0.84  0.040 / 0.030
G17     69.3           24.0                8.8 +/-    1.69      17.7 +/-    1.69  0.080 / 0.120
G19     57.2           37.7                9.0 +/-    0.79      13.5 +/-    0.79  0.100 / 0.130
G24     245.6          34.8               12.6 +/-    2.05      20.1 +/-    2.05  0.030 / 0.040
G25     316.2          11.4               -7.6 +/-   35.64     -20.7 +/-   35.64  0.040 / 0.050