PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/30-15:57:50
G10     301.0          53.8                7.0 +/-    1.57       8.5 +/-    1.57  0.080 / 0.070
G15     45.6           24.1                6.8 +/-    2.16      13.5 +/-    2.16  0.080 / 0.080
G20     2.8            64.8                7.1 +/-    0.71       7.7 +/-    0.71  0.040 / 0.040
G21     99.9           72.9                9.5 +/-    0.70       9.9 +/-    0.70  0.040 / 0.040
G24     98.4           27.1                8.3 +/-    1.40      15.4 +/-    1.40  0.070 / 0.050
G27     299.7          35.0                6.7 +/-    1.52      10.6 +/-    1.52  0.070 / 0.030
G32     210.0          34.4                9.7 +/-    1.07      15.6 +/-    1.07  0.140 / 0.150