PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/30-19:57:40
G02     203.4          35.3               13.1 +/-    1.91      20.6 +/-    1.91  0.050 / 0.130
G06     161.0          68.9               10.8 +/-    1.01      11.5 +/-    1.01  0.050 / 0.120
G12     306.7          13.7                8.4 +/-    3.14      21.5 +/-    3.14  0.060 / 0.070
G17     35.8           49.2                9.1 +/-    0.41      11.6 +/-    0.41  0.060 / 0.090
G19     4.2            64.5                8.2 +/-    0.56       9.0 +/-    0.56  0.030 / 0.050
G24     296.6          38.5                9.9 +/-    0.62      14.8 +/-    0.62  0.040 / 0.040
G28     100.4          35.1                9.8 +/-    0.91      15.6 +/-    0.91  0.170 / 0.250