PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-22:43:00
G02     229.8          71.6               11.9 +/-    0.31      12.5 +/-    0.31  0.040 / 0.040
G05     173.0          12.4               19.7 +/-    2.60      52.0 +/-    2.60  0.040 / 0.040
G06     42.8           62.8               11.3 +/-    0.44      12.6 +/-    0.44  0.090 / 0.090
G12     321.4          47.6               11.0 +/-    0.49      14.3 +/-    0.49  0.090 / 0.090
G17     65.3           27.8                9.0 +/-    1.95      16.6 +/-    1.95  0.210 / 0.350
G19     50.3           43.3               11.7 +/-    1.27      16.1 +/-    1.27  0.230 / 0.300
G24     250.7          37.6               13.1 +/-    1.39      19.9 +/-    1.39  0.030 / 0.030