PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/21-22:13:20
G10     277.1          44.7               10.7 +/-    1.41      14.5 +/-    1.41  0.050 / 0.050
G13     38.4           10.7                8.0 +/-    4.11      22.0 +/-    4.11  0.050 / 0.050
G15     52.2           42.6                8.4 +/-    0.88      11.7 +/-    0.88  0.070 / 0.150
G20     315.7          63.4                9.8 +/-    0.91      10.9 +/-    0.91  0.080 / 0.160
G21     25.3           75.7                8.3 +/-    0.61       8.5 +/-    0.61  0.180 / 0.620
G24     114.6          18.9               10.8 +/-    2.30      24.4 +/-    2.30  0.190 / 0.670
G27     314.7          24.7                6.6 +/-    3.26      12.9 +/-    3.26  0.140 / 0.310
G29     167.8          22.9               11.2 +/-    1.12      23.0 +/-    1.12  0.140 / 0.250
G32     205.4          16.3               14.5 +/-    2.38      34.9 +/-    2.38  0.040 / 0.060