PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-22:28:10
G02     218.7          63.6               13.6 +/-    0.84      15.0 +/-    0.84  0.040 / 0.080
G06     51.0           70.9               12.0 +/-    0.45      12.6 +/-    0.45  0.040 / 0.080
G12     319.7          39.6               10.2 +/-    0.74      14.9 +/-    0.74  0.060 / 0.080
G17     58.2           32.9                9.5 +/-    1.15      15.8 +/-    1.15  0.060 / 0.080
G19     41.1           48.5               10.4 +/-    0.44      13.3 +/-    0.44  0.030 / 0.040
G24     261.0          40.8               13.3 +/-    1.61      19.1 +/-    1.61  0.030 / 0.040
G28     124.7          11.2               12.3 +/-    3.23      33.3 +/-    3.23  0.040 / 0.060