PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-21:58:10
G02     200.6          25.3               19.9 +/-    3.84      38.6 +/-    3.84  0.070 / 0.160
G06     167.9          58.8               16.1 +/-    0.55      18.5 +/-    0.55  0.090 / 0.120
G13     224.6          10.5               20.8 +/-    3.83      57.5 +/-    3.83  0.040 / 0.040
G17     21.3           59.5               13.4 +/-    0.65      15.3 +/-    0.65  0.040 / 0.040
G19     331.1          70.0               12.4 +/-    0.77      13.1 +/-    0.77  0.060 / 0.100
G24     307.2          32.4               11.7 +/-    1.98      19.5 +/-    1.98  0.060 / 0.100
G28     92.5           37.2               15.0 +/-    1.06      22.8 +/-    1.06  0.260 / 0.500
G30     157.2          10.2               21.2 +/-    4.24      59.0 +/-    4.24  0.210 / 0.560