PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-21:57:20
G02     200.9          26.6               15.8 +/-    1.81      29.8 +/-    1.81  0.070 / 0.160
G06     167.0          60.4               13.6 +/-    0.48      15.4 +/-    0.48  0.070 / 0.150
G17     23.1           58.4               12.0 +/-    0.75      13.9 +/-    0.75  0.030 / 0.040
G19     335.3          69.6               11.2 +/-    0.55      11.9 +/-    0.55  0.040 / 0.040
G24     306.0          33.3               10.6 +/-    1.76      17.3 +/-    1.76  0.040 / 0.090
G28     94.0           36.4               12.5 +/-    1.19      19.4 +/-    1.19  0.050 / 0.070