PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/20-01:12:30
G02     7.4            72.3                8.1 +/-    0.36       8.5 +/-    0.36  0.020 / 0.040
G05     159.4          41.6               10.8 +/-    1.25      15.3 +/-    1.25  0.030 / 0.030
G06     42.6           36.4                6.7 +/-    0.69      10.4 +/-    0.69  0.090 / 0.360
G12     298.0          75.0                7.1 +/-    1.36       7.3 +/-    1.36  0.090 / 0.290
G19     81.5           22.4                7.3 +/-    1.42      15.2 +/-    1.42  0.030 / 0.070
G24     221.8          17.1               10.1 +/-    5.40      23.9 +/-    5.40  0.030 / 0.070
G25     315.0          36.4                8.4 +/-    1.04      13.0 +/-    1.04  0.080 / 0.190
G29     293.1          16.9                8.1 +/-    1.92      19.1 +/-    1.92  0.090 / 0.180