PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/26-01:58:10
G08     298.5          21.4                8.1 +/-    1.32      17.3 +/-    1.32  0.060 / 0.090
G10     7.1            62.7                7.8 +/-    1.34       8.7 +/-    1.34  0.060 / 0.100
G14     227.6          44.0               12.7 +/-    2.66      17.3 +/-    2.66  0.050 / 0.070
G20     62.4           53.5                9.6 +/-    0.57      11.6 +/-    0.57  0.040 / 0.080
G21     146.0          43.0               11.4 +/-    0.91      15.8 +/-    0.91  0.070 / 0.090
G24     58.3           26.6                7.3 +/-    1.23      13.7 +/-    1.23  0.120 / 0.110
G27     256.9          32.9                9.8 +/-    3.30      16.1 +/-    3.30  0.030 / 0.030
G32     241.1          65.3               10.6 +/-    0.86      11.6 +/-    0.86  0.030 / 0.030