PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-14:57:40
G02     215.0          54.8                9.4 +/-    1.04      11.2 +/-    1.04  0.080 / 0.110
G06     63.5           75.5               10.0 +/-    1.05      10.3 +/-    1.05  0.050 / 0.100
G12     317.2          33.6                6.8 +/-    1.40      11.1 +/-    1.40  0.040 / 0.080
G17     52.9           36.5                7.0 +/-    0.96      10.8 +/-    0.96  0.060 / 0.080
G19     38.0           49.3                7.0 +/-    0.61       8.9 +/-    0.61  0.090 / 0.250
G24     269.7          41.5                7.9 +/-    0.78      11.2 +/-    0.78  0.070 / 0.230
G28     118.9          21.4                8.9 +/-    1.43      19.0 +/-    1.43  0.040 / 0.030