PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-19:12:40
G02     230.2          70.6                9.5 +/-    0.43      10.0 +/-    0.43  0.260 / 0.480
G05     173.4          11.9                7.8 +/-    8.89      21.0 +/-    8.89  0.310 / 0.500
G06     42.6           64.0                7.9 +/-    0.52       8.6 +/-    0.52  0.040 / 0.040
G12     320.4          44.7                7.5 +/-    0.55      10.1 +/-    0.55  0.030 / 0.050
G17     65.2           27.0                7.5 +/-    2.19      14.1 +/-    2.19  0.060 / 0.100
G19     52.3           40.8                7.3 +/-    0.94      10.5 +/-    0.94  0.050 / 0.070
G24     251.2          37.3                8.6 +/-    0.68      13.0 +/-    0.68  0.060 / 0.110
G28     128.2          10.1                9.2 +/-    3.23      25.6 +/-    3.23  0.080 / 0.110