PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/25-17:28:10
G02     231.9          70.6                8.4 +/-    0.99       8.9 +/-    0.99  0.240 / 0.440
G05     173.4          12.4               10.9 +/-    3.36      28.8 +/-    3.36  0.260 / 0.480
G06     42.0           62.1                6.5 +/-    0.68       7.2 +/-    0.68  0.090 / 0.100
G12     320.7          46.5                7.0 +/-    0.34       9.2 +/-    0.34  0.090 / 0.080
G17     65.4           27.4                5.4 +/-    2.03      10.0 +/-    2.03  0.040 / 0.100
G19     53.6           39.9                7.2 +/-    1.47      10.5 +/-    1.47  0.050 / 0.090
G24     250.4          36.8               10.0 +/-    1.95      15.4 +/-    1.95  0.060 / 0.080
G28     128.8          9.6                10.0 +/-    4.82      28.0 +/-    4.82  0.050 / 0.080