PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/21-15:43:20
G02     236.3          71.6                9.3 +/-    1.06       9.7 +/-    1.06  0.080 / 0.110
G05     173.1          14.0                9.7 +/-    1.85      24.7 +/-    1.85  0.080 / 0.100
G06     40.9           59.1                9.6 +/-    0.67      11.0 +/-    0.67  0.030 / 0.060
G12     321.2          49.9                8.5 +/-    1.14      10.7 +/-    1.14  0.040 / 0.060
G17     67.4           25.9                8.0 +/-    1.04      15.3 +/-    1.04  0.030 / 0.040
G19     56.3           38.1                8.0 +/-    0.30      12.1 +/-    0.30  0.040 / 0.040
G24     248.0          35.5               11.1 +/-    0.95      17.5 +/-    0.95  0.050 / 0.240