PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/15-14:42:50
G02     204.3          32.9               10.1 +/-    2.07      16.7 +/-    2.07  0.100 / 0.270
G06     155.5          70.2               10.2 +/-    0.66      10.8 +/-    0.66  0.100 / 0.300
G12     307.2          15.4                5.9 +/-    2.20      14.6 +/-    2.20  0.120 / 0.100
G17     32.8           51.6                7.9 +/-    1.65       9.8 +/-    1.65  0.090 / 0.080
G19     6.3            64.1                8.6 +/-    0.71       9.5 +/-    0.71  0.050 / 0.040
G24     297.5          37.7                8.4 +/-    3.62      12.7 +/-    3.62  0.050 / 0.030
G28     99.7           36.3                9.6 +/-    1.11      14.8 +/-    1.11  0.040 / 0.030