PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-23:28:00
G02     317.5          81.2                9.5 +/-    0.98       9.6 +/-    0.98  0.040 / 0.050
G05     165.6          29.1               15.1 +/-    0.78      26.9 +/-    0.78  0.030 / 0.040
G06     40.7           44.5                8.3 +/-    0.44      11.3 +/-    0.44  0.070 / 0.100
G12     317.5          66.6                6.5 +/-    1.17       7.0 +/-    1.17  0.070 / 0.100
G17     80.7           16.9               10.1 +/-    1.05      24.0 +/-    1.05  0.080 / 0.140
G19     69.1           31.9               10.8 +/-    0.37      18.2 +/-    0.37  0.080 / 0.130
G24     232.4          26.3               16.7 +/-    1.53      31.6 +/-    1.53  0.030 / 0.040
G25     317.8          23.4                7.6 +/-    2.59      15.5 +/-    2.59  0.030 / 0.030