PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-21:43:00
G02     204.2          38.9               19.9 +/-    1.60      29.5 +/-    1.60  0.140 / 0.120
G06     159.0          71.4               17.6 +/-    0.80      18.4 +/-    0.80  0.090 / 0.130
G12     308.3          15.8               10.6 +/-    2.76      25.9 +/-    2.76  0.060 / 0.100
G17     39.4           46.2               14.0 +/-    0.42      18.5 +/-    0.42  0.050 / 0.090
G19     9.4            62.8               14.5 +/-    0.59      16.1 +/-    0.59  0.060 / 0.080
G24     292.6          40.1               13.6 +/-    1.01      19.7 +/-    1.01  0.050 / 0.100
G28     103.6          32.8               17.2 +/-    0.97      28.5 +/-    0.97  0.140 / 0.380