PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/01-21:58:00
G10     294.8          51.7                8.4 +/-    2.30      10.4 +/-    2.30  0.040 / 0.040
G15     46.8           31.3                7.3 +/-    1.40      12.5 +/-    1.40  0.040 / 0.040
G20     347.3          65.3                9.5 +/-    0.64      10.3 +/-    0.64  0.060 / 0.110
G21     83.1           76.1                9.5 +/-    0.41       9.8 +/-    0.41  0.070 / 0.100
G24     102.1          25.5                9.7 +/-    1.38      18.7 +/-    1.38  0.100 / 0.130
G27     304.0          32.9                7.3 +/-    2.20      12.1 +/-    2.20  0.120 / 0.120
G29     167.9          10.5               13.7 +/-    3.43      37.8 +/-    3.43  0.100 / 0.080
G32     209.0          29.1               13.8 +/-    1.62      24.6 +/-    1.62  0.100 / 0.080