PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-21:43:10
G10     256.4          32.7               11.8 +/-    1.92      19.5 +/-    1.92  0.040 / 0.050
G13     47.8           24.9                9.4 +/-    1.64      18.5 +/-    1.64  0.050 / 0.050
G15     74.6           55.8               11.1 +/-    0.55      13.1 +/-    0.55  0.120 / 0.560
G16     289.4          15.1                7.6 +/-    2.65      18.8 +/-    2.65  0.200 / 0.780
G20     279.7          54.9                9.9 +/-    3.18      11.8 +/-    3.18  0.160 / 0.170
G21     341.6          63.9               10.7 +/-    0.93      11.7 +/-    0.93  0.100 / 0.150
G26     262.4          12.9               11.5 +/-    1.99      30.0 +/-    1.99  0.030 / 0.040
G29     165.2          43.0               10.8 +/-    1.00      15.0 +/-    1.00  0.040 / 0.040