PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-22:42:50
G02     225.2          68.9               12.9 +/-    0.63      13.7 +/-    0.63  0.050 / 0.080
G06     45.4           69.3               12.2 +/-    0.43      12.9 +/-    0.43  0.050 / 0.080
G12     319.6          40.9               11.0 +/-    0.41      15.8 +/-    0.41  0.090 / 0.110
G17     63.8           27.1               11.2 +/-    1.98      21.0 +/-    1.98  0.070 / 0.090
G19     48.4           43.4               13.0 +/-    1.34      17.9 +/-    1.34  0.260 / 0.420
G24     253.7          38.8               13.3 +/-    2.01      19.8 +/-    2.01  0.200 / 0.350
G28     126.5          11.7               16.0 +/-    1.53      42.9 +/-    1.53  0.030 / 0.030