PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/14-05:12:30
G10     282.3          46.8                8.8 +/-    1.59      11.6 +/-    1.59  0.090 / 0.120
G15     49.2           37.1                6.5 +/-    0.76      10.0 +/-    0.76  0.100 / 0.140
G20     324.9          64.4                7.7 +/-    0.41       8.5 +/-    0.41  0.040 / 0.070
G21     51.2           76.7                8.6 +/-    0.44       8.8 +/-    0.44  0.040 / 0.040
G24     108.9          21.3                7.9 +/-    1.75      16.8 +/-    1.75  0.070 / 0.080
G27     312.2          26.9                7.5 +/-    1.61      14.1 +/-    1.61  0.100 / 0.080
G29     166.7          15.8                9.3 +/-    2.36      22.6 +/-    2.36  0.160 / 0.230
G32     207.4          17.2                8.7 +/-    1.84      20.5 +/-    1.84  0.080 / 0.290