PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-01:28:20
G10     296.1          52.1                8.1 +/-    2.14      10.0 +/-    2.14  0.060 / 0.110
G15     46.3           29.1                8.0 +/-    0.99      14.3 +/-    0.99  0.050 / 0.100
G20     347.1          65.2                9.6 +/-    0.87      10.4 +/-    0.87  0.110 / 0.060
G21     88.0           75.5               10.2 +/-    1.00      10.5 +/-    1.00  0.070 / 0.080
G24     100.3          25.9               10.5 +/-    1.38      20.2 +/-    1.38  0.040 / 0.040
G27     303.3          33.1                5.2 +/-    2.86       8.5 +/-    2.86  0.040 / 0.040
G32     209.7          28.7               11.1 +/-    1.62      19.9 +/-    1.62  0.090 / 0.100