PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-15:43:00
G02     244.1          74.3                8.5 +/-    0.70       8.8 +/-    0.70  0.120 / 0.110
G05     171.9          16.7                9.8 +/-    1.02      23.3 +/-    1.02  0.130 / 0.120
G06     40.1           55.8                8.3 +/-    0.60       9.8 +/-    0.60  0.040 / 0.050
G12     321.2          53.3                8.1 +/-    1.00       9.8 +/-    1.00  0.040 / 0.070
G17     70.2           23.9                7.6 +/-    0.81      15.2 +/-    0.81  0.140 / 0.410
G19     59.5           36.0                5.8 +/-    0.68       9.0 +/-    0.68  0.220 / 0.360
G24     244.6          33.7               12.1 +/-    0.94      19.7 +/-    0.94  0.050 / 0.050
G25     316.5          12.6                7.1 +/-    1.57      18.8 +/-    1.57  0.040 / 0.050