PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-03:12:40
G10     305.7          54.9                8.4 +/-    1.05      10.1 +/-    1.05  0.090 / 0.040
G14     211.1          15.6               14.6 +/-    2.42      35.8 +/-    2.42  0.080 / 0.050
G15     45.6           23.2                6.5 +/-    1.96      13.2 +/-    1.96  0.050 / 0.010
G20     2.8            64.8                9.3 +/-    0.57      10.1 +/-    0.57  0.030 / 0.010
G21     108.4          71.3               11.0 +/-    0.90      11.6 +/-    0.90  0.040 / 0.040
G24     93.0           28.0                8.2 +/-    0.97      15.0 +/-    0.97  0.040 / 0.040
G27     296.6          35.6               10.2 +/-    2.89      16.0 +/-    2.89  0.130 / 0.350
G32     212.6          34.1               13.9 +/-    2.14      22.5 +/-    2.14  0.190 / 0.320