PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/26-20:57:50
G02     201.6          28.7               14.9 +/-    1.30      26.8 +/-    1.30  0.160 / 0.200
G06     164.5          63.3               13.6 +/-    0.28      15.0 +/-    0.28  0.150 / 0.210
G12     304.5          11.6                4.6 +/-   21.12      12.3 +/-   21.12  0.060 / 0.100
G17     27.0           55.9               11.5 +/-    0.95      13.5 +/-    0.95  0.060 / 0.090
G19     341.3          68.8               10.7 +/-    0.55      11.4 +/-    0.55  0.040 / 0.030
G24     303.7          35.0               11.8 +/-    2.20      18.8 +/-    2.20  0.030 / 0.030
G28     96.5           34.9               13.3 +/-    0.94      21.2 +/-    0.94  0.050 / 0.030