PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-21:12:40
G10     266.6          39.3                9.9 +/-    1.54      14.6 +/-    1.54  0.040 / 0.040
G13     41.8           17.8                7.7 +/-    2.81      17.9 +/-    2.81  0.040 / 0.040
G15     60.5           50.1                9.3 +/-    0.64      11.7 +/-    0.64  0.190 / 0.320
G16     279.5          12.8                8.8 +/-    2.36      23.0 +/-    2.36  0.090 / 0.300
G20     297.5          60.3                9.4 +/-    0.89      10.7 +/-    0.89  0.040 / 0.050
G21     359.2          70.7               10.5 +/-    0.79      11.0 +/-    0.79  0.030 / 0.040
G24     122.5          13.6               10.7 +/-    2.40      27.5 +/-    2.40  0.190 / 0.480
G27     319.3          17.9                9.3 +/-    2.45      21.6 +/-    2.45  0.200 / 0.560
G29     167.1          32.5               11.2 +/-    1.11      18.6 +/-    1.11  0.170 / 0.150